Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc357721ca73caec…

MALICIOUS

PDF

91.7 KB Created: 2020-08-02 19:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7566207ef928aa0fa7319cef971b2146 SHA-1: 877c85e9552726b096c403104fa9b1566cf0b3dc SHA-256: bc357721ca73caec3364bafd93a2c197b77e4399532df7858e74d20f8cb093bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a keyword suggesting a lure. The document body, though heavily obfuscated, also contains this URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking for the lure keywords.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=goanimate+character+creator+comedy+world+wix In PDF document text
    • http://files.katelyns-creations.com/uploads/1/3/1/4/131437249/xukatewemavipu.pdfIn PDF document text
    • http://files.sunnysweetskin.com/uploads/1/3/0/7/130775506/basorijavitik.pdfIn PDF document text
    • http://files.hairyhobby.ca/uploads/1/3/1/6/131606331/tazujusoxud-zapokedidutud-liwulosabe.pdfIn PDF document text
    • http://files.annegreenwood.net/uploads/1/3/2/7/132712209/watenonok-lazenoguw-rixun.pdfIn PDF document text
    • http://files.soundteaching.ca/uploads/1/3/0/7/130776573/781138eef9835de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5845/2897/files/iphone_1-_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/sarekojubada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/python_string_replace_regex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/12778379084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1107/9317/files/3200212426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/xekixebadelakukorupureju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4063/5042/files/toshiba_satellite_factory_reset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/muvotakugumok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8493/7384/files/10421009091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/lisagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/vomilipepoj.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00013710.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13710 17532 bytes
SHA-256: a23db4aa8d1ca53cfbd3512333bc9713e7dc7654757a726de6f663834256a589
font_00_sfnt_off0000e144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE144 6440 bytes
SHA-256: 2ce5a7286efefc5aae27ce1c31b3347e159d00bd30cf97f509a0b7f7d49caffb
font_01_sfnt_off0000f108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF108 4004 bytes
SHA-256: bd83e8df6ea939ad814a95e1020c86012021b87ecfe8e421af11b31308e2cf77
font_02_sfnt_off0000ff15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF15 5084 bytes
SHA-256: efbf13f6cdf8b87910ee572dc6c2d1855e7e196e14536dcee6936ae91b8e143a
font_03_sfnt_off0001103f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103F 11300 bytes
SHA-256: b8eaad0a9159c7ea59907b1695d634f3b9595395dc5987916fbd5529eda60879
font_05_sfnt_off00015163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15163 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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