Malicious PDF — malware analysis report

Static analysis result for SHA-256 350f1a35e2dee944…

MALICIOUS

PDF

42.5 KB Created: 2020-08-08 00:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f8b21d9d570d0110c5642c6f5c66a69 SHA-1: c599a60211206d2264e67a978ab91cbcf18fa980 SHA-256: 350f1a35e2dee94417de168336c48156a41e7f0922b8363dd6a3611f742efdd3
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=biochemistry+journal+articles+free+pdf', is designed to lure users by appearing to offer free journal articles. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=biochemistry+journal+articles+free+pdf In PDF document text
    • http://files.northstaranimalcomm.com/uploads/1/3/1/3/131382470/6c6c838f6e28751.pdfIn PDF document text
    • http://files.numeracyteacher.com/uploads/1/3/1/6/131606260/wuzad-naxumesimab.pdfIn PDF document text
    • http://files.edcardproject.org/uploads/1/3/0/7/130775729/jopolunizaxabin.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/1/0428/4222/6854/files/mafilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/sql_plsql_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/52523995382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2996/9561/files/insurgency_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/algorithm_analysis_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/monoxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bojakotipizijogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/21582080899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/zanavijupasobozurob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1072/6815/files/anemia_hemolitica_recien_nacido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/ferozobidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/83266057750.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A11 5504 bytes
SHA-256: 731353921ed56fd66a89f46f2f13040045966d11a16e98ab870354d56b0a9af2
font_01_sfnt_off00006ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA4 9920 bytes
SHA-256: 291463317829207b6b12f976da93341f870354779b64d50501b33516c0320a10
font_02_sfnt_off00008ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA8 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.