Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a87780c9987bfdc…

MALICIOUS

PDF

42.4 KB Created: 2020-08-15 08:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eae0d7d11bc928923000fe5386940010 SHA-1: 8789ab4d3600a8088fa6bb8d50237f1311f54d19 SHA-256: 4a87780c9987bfdcfc074ec8a2074b65f84b2c010c6ccae38555126f12994297
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, pointing to 'https://ttraff.cc/pify?keyword=google+sheets+organizational+chart'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com and other domains, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of 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.cc/pify?keyword=google+sheets+organizational+chart In PDF document text
    • http://files.frhstrainingconsultants.com/uploads/1/3/0/7/130776142/137f7bd0.pdfIn PDF document text
    • http://tagawop.micheledvicino.com/uploads/1/3/2/6/132695471/dabivuvamivetasope.pdfIn PDF document text
    • http://files.ontherun.us/uploads/1/3/1/6/131606109/b5296ce51c34d54.pdfIn PDF document text
    • http://visog.runflagler.org/uploads/1/3/1/3/131384609/7735778.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/1/0440/8606/7352/files/47270517244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1326/6846/files/47760714931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/19770756154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/primary_auxiliary_verbs_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6560/5286/files/age_of_empires_2_hd_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/alankar_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/muronu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9648/8613/files/kuradobogosetig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7578/7162/files/35061318781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/51645561652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/minecraft_realms_cross_platform.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 5

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_off00006833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6833 5144 bytes
SHA-256: d85ae977b0c73a3deed7cdf31e58717def98bbd8ae790577e8d142e0037f99bb
font_01_sfnt_off000079b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B6 10256 bytes
SHA-256: 818a7f92cc4ffb63051135ec7d351a495212909f15c4f35df3417299a948ffcf

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