Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb5b676594e99ff…

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 23:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d237c911f9bc99f6e05dd34f7b205da6 SHA-1: eb1c9fdbd3119658bf50b47eb91cfba081c2745e SHA-256: 6cb5b676594e99fffa158bc370f2f882adb5cd02c884596346447ecea1896b63
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure for a 'Myers Briggs test free download' which redirects to a malicious URL. The document also contains a large number of links to other PDFs hosted on Shopify, likely part of an SEO link farm to improve search engine ranking for malicious content. No scripts were extracted, but the presence of malicious redirector links and the SEO link farm indicate a phishing or scam attempt.

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.com/pify?keyword=myers+briggs+test+pdf+free In PDF document text
    • http://files.stmarkscocoa.org/uploads/1/3/1/4/131408170/zogipavoworire.pdfIn PDF document text
    • http://files.totalvolumeagency.com/uploads/1/3/1/4/131437307/mevasusop.pdfIn PDF document text
    • http://files.nlrtsa.co.uk/uploads/1/3/1/4/131406108/5961061.pdfIn PDF document text
    • http://files.rebeccagrahamgallery.com/uploads/1/3/1/6/131637570/rosowewaxikegul_fimer_tasosi.pdfIn PDF document text
    • http://files.cliftscovemadison.com/uploads/1/3/1/4/131437474/kewurosubix.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/1/0428/9835/8432/files/mowojemabedeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/98940072733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/pathfinder_wonderous_items.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8862/4283/files/zokisomavaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1085/files/synaptic_transmission_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7087/2995/files/dodupulutujiwodijuwevaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/vomowelavudonis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/64598735507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/puxosop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/88277437195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6520/3093/files/kwick_way_loader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/lemifuxizanafagatanid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/jovuluj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634D 4788 bytes
SHA-256: 82f635bd4429f3ee44a84d27547f13ac5f16a32e2bfbc89220b95c2f9a190d6a
font_01_sfnt_off000073ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73AD 9924 bytes
SHA-256: 090b0bbe0c7d1161fd1226cd3a4513813da49332f68699681a4156aa2d4d9f05
font_02_sfnt_off0000959f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x959F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71