Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d15c5132e3935b5…

MALICIOUS

PDF

53.6 KB Created: 2020-08-12 22:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4640155186e7dc40e0204b7609017d66 SHA-1: 60e0343268a2888cd84d9bda43d17c19a61e8220 SHA-256: 8d15c5132e3935b5f80e441f5796c60bf20ae20a67187a3f45e52f7eabf33840
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `ttraff.cc`. This link is presented within the document body, disguised as a free download for a nutrition guide. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content or redirect users. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=bodyboss+superfood+nutrition+guide+pdf+free+download In PDF document text
    • http://fatepa.singplayaudiate.com/uploads/1/3/1/0/131070604/dubelo.pdfIn PDF document text
    • http://liparosax.kiahwilson.com/uploads/1/3/1/3/131381679/9c89c2bf.pdfIn PDF document text
    • http://files.realappealhome.com/uploads/1/3/0/7/130776795/4133536.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4718/9670/files/xufutuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/62400381360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6387/5486/files/vakenotutesesawapewugil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/small_size_reader_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/8038289755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/6947992672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/topimabetupepizilewepin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/antibiotic_essentials_2020_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/behaviorismo_radical_o_que.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/pururudekoremimubam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0876/0742/files/apportionment_and_voting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/pesijutugijuk.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBC 5592 bytes
SHA-256: 159d037d16c8a8890848e593211b0b2855499bd0d7c37fb2cdc921ce17f170a5
font_01_sfnt_off000082e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E3 15396 bytes
SHA-256: 63abca08d8da6b01f22a32f54d5fd0873da7898a8a8650941805e5ea3e8f95d9
font_02_sfnt_off0000b34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB34B 16256 bytes
SHA-256: cfc5ad3c10dbacabfd28f16c6e43d753a4caa6f1a8d182556343c2d03833f92c