Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70c076673addbbe…

MALICIOUS

PDF

43.6 KB Created: 2020-08-12 15:36:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6e45311c38e5c62b3ea27574f9440ed SHA-1: 4523299744987875aae3e188f5424c4d6e5cf930 SHA-256: e70c076673addbbe9c8d7eb0d7b7b84755f72e5212a6450535e94afd3382ed2e
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 `https://ttraff.cc/pify?keyword=escmid+guideline+diagnosis+and+treatment+of+acute+bacterial+meningitis+pdf`. This indicates the document's primary purpose is to redirect users to malicious sites. The presence of a large number of external PDF links, many hosted on potentially compromised or low-reputation domains, further supports a link-farming or redirection attack. No scripts were extracted, limiting the analysis of further stages.

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=escmid+guideline+diagnosis+and+treatment+of+acute+bacterial+meningitis+pdf In PDF document text
    • http://jufiri.ikmchauffeurs.com/uploads/1/3/2/6/132681670/7314c21d888c06.pdfIn PDF document text
    • http://jofunepik.glassfloatproject.com/uploads/1/3/1/8/131856917/657918.pdfIn PDF document text
    • http://files.whatthesaintsknew.org/uploads/1/3/1/4/131453436/votukapopezufuxuji.pdfIn PDF document text
    • http://zizovoj.jillwongphotography.com/uploads/1/3/0/7/130775484/gemibaruxeduxib.pdfIn PDF document text
    • http://files.racing-pigeon-media.com/uploads/1/3/0/9/130969206/nopanozawibapi.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/1/0429/8647/1587/files/phytoremediation_technology_for_wastewater_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/93233520737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5715/1142/files/rojudovasajeluxexaraguvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/97341675041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/wiriderafuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7593/5135/files/nejesuxivumimaluwuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5815/7982/files/10592441494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2823/3883/files/whirlpool_duet_washer_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6169/6925/files/43220775577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4764/1511/files/58899288503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7039/8357/files/injective_surjective_bijective_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1103/9655/files/xigupolabowowidifon.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEB 5572 bytes
SHA-256: 78d779d505ceb83867429f4e5d000ee5e872897f54aa4208983d194ccd4ff9f5
font_01_sfnt_off00007dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBD 10288 bytes
SHA-256: 53950f4c6e3a9cdb5f742cdecc477e9f0992a2d98fdb3f6b3ea12493763d2209