Malicious PDF — malware analysis report

Static analysis result for SHA-256 e05ff247eaaf7201…

MALICIOUS

PDF

123.3 KB Created: 2020-07-26 04:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: beb59118142f6f352cc2c980948873cb SHA-1: b4c70b71a7da877e384d96e3a628380bfb9a7f95 SHA-256: e05ff247eaaf72019a1671bfaf8f3dd113d0e143cc2ef59901fda33cfa53c7f1
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body appears to be largely corrupted or obfuscated, but the presence of the redirector link is a strong indicator of malicious intent, likely for phishing or malware delivery.

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/wb?keyword=quimica%20organica%20wade%20pdf In PDF document text
    • http://files.lilachbar-ami.com/uploads/1/3/2/3/132303099/xidisev.pdfIn PDF document text
    • http://files.fureverfashionbyaprilllc.com/uploads/1/3/0/8/130814118/5600020.pdfIn PDF document text
    • http://files.leahkneipp.com/uploads/1/3/1/8/131871859/bawow_wizekun_forulaxiwob.pdfIn PDF document text
    • http://files.eviesoriginalsartnwearables.com/uploads/1/3/1/4/131454699/4543928.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/1/0437/1336/4121/files/92914859907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/57584983360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/29189725536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/81386773470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/42422902175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/loxidunadubufurepetiverox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/wufogutudujedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/4761492368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/gulifoxaridedaruzobilup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/lipamemiridi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0917/1879/files/56452007234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/78367539977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/xuwigemuxixonemojizunifu.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19681 5220 bytes
SHA-256: c614e9a36acc5047e3febee32af6b27783dc0f91698cd4cd836d4e0dc79a5cd4
font_01_sfnt_off0001a82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A82F 18168 bytes
SHA-256: d7a090b928620509740c2168a2556abae779068156ba7d82b5dad6037ce4cde0

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