Malicious PDF — malware analysis report

Static analysis result for SHA-256 7855c76bd7d2af3f…

MALICIOUS

PDF

35.8 KB Created: 2020-08-19 18:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cfc9103c2d5b2fa06077e346612034d SHA-1: 4e7d7d7d239ed0e35d94cff988e151165d5edb7d SHA-256: 7855c76bd7d2af3f5b5a34f35afefea21c12d91242a2d660000b901da4ae4af9
194 Risk Score

Malware Insights

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

This PDF document contains multiple links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=photolayers+superimpose+eraser+apk'. The document body and heuristics suggest a lure for downloading applications, likely a phishing or scam attempt. The presence of numerous external PDF links further indicates a link farm strategy to distribute malicious content. No scripts were extracted, but the embedded URLs are the primary indicators 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=photolayers+superimpose+eraser+apk In PDF document text
    • http://files.rationalhedonism.org/uploads/1/3/0/7/130776131/9912560.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/1/0430/1750/2869/files/pawawixumenibafixasanop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6307/3181/files/70820054828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8819/9328/files/exemple_attestation_stage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/alien_shooter_hack_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5350/6969/files/13673935444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/bark_at_the_moon_solo_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/fotibofaxekulugifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3576/9497/files/93731960079.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4485 2952 bytes
SHA-256: d248e050604671b7964d57238f833165aa9af1a201d6e4c68c2b32c7cb79a17f
font_01_sfnt_off00004f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F0F 5224 bytes
SHA-256: 4b0f6eec3e15d3087eede8017426118ce31cb4d3d70cc10261f963599f226462
font_02_sfnt_off000060b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B6 9856 bytes
SHA-256: 102b2445b71a587c96183cad394e4d7d665e5e4152cca3e78198a26a8cfb85ea

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