Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f77ae673cea648d…

MALICIOUS

PDF

32.1 KB Created: 2020-08-07 03:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f93c5460701b7de142748fd7b4224057 SHA-1: e8ae30985cd03acb2b73e1bd9ebdb3a9d035012c SHA-256: 9f77ae673cea648dcad86589f7d7756e06b3efb3ed59dd01b3545521ef586b2d
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though obfuscated, contains text related to job searching, suggesting a lure to entice users to click on these links. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be a phishing attempt using a deceptive document.

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.ru/wb?keyword=manual%20testing%20jobs%20in%20chennai%20for%201%20year%20experience In PDF document text
    • http://xafes.lhouette.com/uploads/1/3/1/0/131070109/tuponapabo_suremokeki.pdfIn PDF document text
    • http://files.praxisprojectnb.com/uploads/1/3/0/7/130776680/besujibutisafikupub.pdfIn PDF document text
    • http://files.mikewritesfunny.com/uploads/1/3/1/1/131164250/ce20dedc.pdfIn PDF document text
    • http://files.ecmtrust.org/uploads/1/3/1/4/131409677/gimogivepitasifaluwi.pdfIn PDF document text
    • http://files.braveministry.com/uploads/1/3/1/6/131636819/a23b47c.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/1/0437/8660/0609/files/ruxibixeraxogax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/29241975822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1048/2588/files/vinepodujoxosijujinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/nuxifaluti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0524/6631/files/44585987342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/pudavimasukazawilufiwowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1751/0818/files/gavedigefup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49470024852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/juwuxisanebajar.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_off0000400a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x400A 5720 bytes
SHA-256: 1fa45973ed4fc1ae2e140c67f6462cfd43c5286589138fc09903395090635929
font_01_sfnt_off000053a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A5 9408 bytes
SHA-256: 65f9743963b968b052925975d0685ceb4e1e2b97dd065a84d8f0519dfebb1a3e

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