Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d3737bf9e5bef5…

MALICIOUS

PDF

47.2 KB Created: 2020-08-09 02:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7580c692b43709388e97f9dbe4eff860 SHA-1: af94c94b5420bc18b280b531626ca28a94fb0d93 SHA-256: e6d3737bf9e5bef555ed6f3417adcbdc79c5441446da527e69f7cfee18f99b9c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body contains garbled text and URLs, reinforcing the lure. The primary malicious IOC is the redirector URL.

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/pify?keyword=arifureta+novela+ligera+volumen+8+pdf In PDF document text
    • http://files.unitedstaging.com/uploads/1/3/1/1/131164520/dopaxe.pdfIn PDF document text
    • http://files.greenhavenstable.ca/uploads/1/3/1/3/131398006/wexexowofusew.pdfIn PDF document text
    • http://files.medfieldheightspto.com/uploads/1/3/1/0/131070190/joridesaz.pdfIn PDF document text
    • http://files.brushandbranch.co/uploads/1/3/0/7/130740344/2297158.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/1/0432/9275/4076/files/ximesiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/negumelomesisexiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/vilagubujalopul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/culture_media_used_in_microbiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/10099297152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6196/7013/files/a_fora_o_poder_dos_anjos_da_cabala_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/fosujudago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9412/1379/files/titature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/wulesuzujab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9041/8591/files/tracker_boats_owners_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5436/6877/files/50643952986.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://bit.ly/ArifuretaNL��������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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5757 5428 bytes
SHA-256: c9c157e29ad4e2fc2d88cdd1913eca2a8c4787dea79599aa05fcb317825fb3f3
font_01_sfnt_off000069b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B7 1996 bytes
SHA-256: de65fc73a1a76ba9f8fd6f662784af3d11afc01466f3f30e4995424bb52fb3c5
font_02_sfnt_off000072e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E5 11272 bytes
SHA-256: bfdc307d56b5d678c62101a6789afa890a7629051601cbe81bcd955238fc4f7d
font_03_sfnt_off00009784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9784 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e