Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f892dcad12a9ea…

MALICIOUS

PDF

39.2 KB Created: 2020-08-04 18:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a093616e39bd6c8033b8bce8be24a7b SHA-1: 2c9c1bc98b7f7412fe6cc4f2131b339b7eff5b5d SHA-256: 42f892dcad12a9ea11ed3455261a6b799816fdf766213b161ea54f7895eefd44
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=microbiologia+veterin%25C3%25A1ria+essencial+pdf'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, a PDF SEO link farm heuristic was triggered, suggesting the PDF is part of a larger scheme to generate traffic or distribute content through numerous links. The document body contains garbled text but includes the malicious URL and several Shopify URLs, one of which is identified as a redirector.

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=microbiologia+veterin%25C3%25A1ria+essencial+pdf In PDF document text
    • http://files.uvicscuba.com/uploads/1/3/1/1/131164236/7616194.pdfIn PDF document text
    • http://files.bathurstfamilytherapy.com/uploads/1/3/0/8/130814110/borome-relakekigo-relimoka-xakujepakejumer.pdfIn PDF document text
    • http://files.devils-trumpet.com/uploads/1/3/2/6/132695694/1629948.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/1/0429/8027/8426/files/talugumegavubad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/94808520621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/vasarijekujokebeguxujin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/53116232990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/peginawenilakisemiwufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/47205703385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/wogokobenetejomonebuvawem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1748/3934/files/fezuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8158/7095/files/nekibukirixupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1595/4847/files/memivadumerufepukozit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/29748999875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/mawonapofofotut.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_off000048f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F9 5552 bytes
SHA-256: ba62ce2ea0a0c960e400fe29a6692ecdef26842a919e1608a3df960707850bd6
font_01_sfnt_off00005b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B63 12020 bytes
SHA-256: 6b537104e48a6555e3b2d6dcd087f4460c594182a6933a7034c3ae6b88323214
font_02_sfnt_off00007f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F85 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3