Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e4998348fc19ae…

MALICIOUS

PDF

37.8 KB Created: 2020-08-15 08:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db5ce5b602f93ab36b7b8300bbabe923 SHA-1: 2a29a245256f161c481b4d9ed88bb75544311ff1 SHA-256: 82e4998348fc19ae4ea8a9d602e6f82519ef05677c81cbd2130e2aefa578db6b
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, which in turn points to various PDF files hosted on platforms like Shopify. This pattern is indicative of a phishing or malware distribution campaign, likely using the lure of datasheets or manuals to entice downloads. The ML classifier strongly supports the malicious verdict, and the presence of redirector links suggests an attempt to obscure the true malicious destination.

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=bosch+bme680+datasheet In PDF document text
    • http://files.tiadaghtonvalleyrr.com/uploads/1/3/1/3/131380008/6993a.pdfIn PDF document text
    • http://files.actforveterans.org/uploads/1/3/1/4/131455621/33456.pdfIn PDF document text
    • http://bokojabix.howtomakemerich.com/uploads/1/3/1/4/131453540/6be92c80.pdfIn PDF document text
    • http://files.raygalleryny.com/uploads/1/3/2/6/132682303/888b34f46c0af9.pdfIn PDF document text
    • http://files.juniorbisonhockeyclub.com/uploads/1/3/2/7/132740399/bolokikutenuma.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/1/0429/1251/4201/files/tanixerebikowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/graphing_equations_and_inequalities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/john_deere_1070_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/gazelle_freestyle_elite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/fezokomegul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/6413321228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/cancer_de_prostata_articulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4803/2673/files/portal_2_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/jizeguwawaromaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/photoshop_3d_text_effects_tutorials_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/wosuziwojobifugamez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/diagnosis_and_treatment_of_diabetes_mellitus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.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_off00005472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5472 5732 bytes
SHA-256: 04885fcfe0a5cc4dc129bad68f3e78f929758d3f9cfa719c1e331338b0b4f2b1
font_01_sfnt_off000067bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BD 10148 bytes
SHA-256: 25440d7b8296d7c961233bb11654cca09e9e0d6661c517aaac66a89511c80597