Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c377ce14005e22a…

MALICIOUS

PDF

32.8 KB Created: 2020-08-23 16:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6f26998cdd058b1e092bb6f41fb84cf SHA-1: d99561e9a4621aba65f1ace189f6cf484cdc9e33 SHA-256: 1c377ce14005e22a061b2b8f0a80dd614474724d9092e1f63ecf0dba3a43df58
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.cc'. The document body, though partially corrupted, contains the same URL, suggesting it's the primary lure. The heuristic firings indicate the PDF is designed as a link farm pointing to malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=eyeglasses+eps+vector+free In PDF document text
    • http://zelapiw.irtliveblog.com/uploads/1/3/0/8/130814297/5702304.pdfIn PDF document text
    • http://files.wolfeforgoodenergypud.com/uploads/1/3/0/7/130738960/dijedikob-wolinu-kasiniwakumek-wifimunevuwisid.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/1/0433/0687/7080/files/62894204366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0133/0340/files/sajawozowagudawaxajafuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/37194344191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/typeerror__str_object_is_not_callable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/pearson_test_of_english_academic_practice_tests_plus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/nupobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/97597648409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/81424830242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/95957330819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/new_bodo_video_song_2017.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4664 5304 bytes
SHA-256: 27016bb6a6ec48084889c145785756f2014a9e6dca9fb282f4b078e7bf9cb83d
font_01_sfnt_off00005893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5893 8892 bytes
SHA-256: 309566684bd87dc6cdde160e07111378f47b4ae98f90a349cd1e97abd4fc1cad

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