Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fb2902a919eff5…

MALICIOUS

PDF

82.1 KB Created: 2020-08-06 22:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d90b6d8138b8ce66537d2cc4f659fb3 SHA-1: af8807149c54da6f96aa7106d524266765849cd2 SHA-256: 88fb2902a919eff5f1addc2a24b4788cebb291c97b930f8fea3cc04f4b9de565
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector URL (https://ttraff.ru/pify?keyword=glycosylation+in+golgi+complex+pdf). This redirector is associated with malicious activity, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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=glycosylation+in+golgi+complex+pdf In PDF document text
    • http://files.cogitojiujitsu.com/uploads/1/3/1/3/131398143/bowuputolozulujaris.pdfIn PDF document text
    • http://files.daviessurveys.com/uploads/1/3/0/8/130873804/43f4ead2.pdfIn PDF document text
    • http://files.rochellelucey.com/uploads/1/3/1/3/131381612/9143e.pdfIn PDF document text
    • http://files.hemingwaycottage.com/uploads/1/3/0/9/130969735/volupuk-sigorak.pdfIn PDF document text
    • http://files.sacredheartfc.org/uploads/1/3/2/6/132682607/1998813.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/1/0433/8892/8150/files/33664817269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/repipamumemeputu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/rufuwigowikarekefafimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/12845621807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0600/0282/files/3162187769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/7139143914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/24244730075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3272/1046/files/automatic_gear_transmission_for_two_wheeler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7618/files/40497190922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/gigiwekunudabiwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/nufotama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9295/files/alto_s_lament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1277/6351/files/86222643416.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
    • 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_off0000e216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE216 5368 bytes
SHA-256: 8cb7014c26666ca7a793f77601ad6a808999fd9da587b07dc422f4072c40eca3
font_01_sfnt_off0000f457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF457 10124 bytes
SHA-256: 54c571191861b0cc15fe7fcb2737c35a4c3c226cf483cd42592f5427c102f240
font_02_sfnt_off0001173d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1173D 16148 bytes
SHA-256: aabbb95e4258a1bccfe6759090a0a8b97a33e8154131110566ffb2eaa8fdb080
font_03_sfnt_off00012c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C33 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e