Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a16ac05eea7b883…

MALICIOUS

PDF

40.5 KB Created: 2020-08-06 05:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f40f54e1621ffd3288f29ae1c938cde SHA-1: 1ad76452e36d3d313bc62c81bef3cab19f565cee SHA-256: 9a16ac05eea7b883ae610330d6238e8e0e7d977561ca484c63176361e16bf4a4
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, specifically pointing to 'https://ttraff.cc/pify?keyword=apologize+piano+sheet+music+pdf'. This URL is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'piano sheet music pdf'. The presence of numerous other Shopify links suggests an attempt to blend in with benign content, a common tactic in SEO-based spam campaigns.

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=apologize+piano+sheet+music+pdf In PDF document text
    • http://files.rarq.org/uploads/1/3/0/7/130775977/7699014.pdfIn PDF document text
    • http://files.mountainridgefootball.com/uploads/1/3/0/8/130814132/764069.pdfIn PDF document text
    • http://files.biggsbassethounds.com/uploads/1/3/1/8/131857071/84fb7a2093dbc.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/1/0430/3152/7575/files/ultimate_skyrim_special_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/murray_22_lawn_mower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/sifuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/numojowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/speak_english_podcast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/epispadias_clasificacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1212/6882/files/36506565129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1647/9132/files/wopuvatimufepome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/email_pasword_cracker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/sexavubisif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/gujonafebirabulusil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/59659932465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/67913045860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/45145857694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/wogifi.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 8

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_off00005335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5335 5512 bytes
SHA-256: 0a7ba7b4f274edce901735ae3b600603f19c28dba3b47410d4822fa71aa1d192
font_01_sfnt_off000065df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DF 15228 bytes
SHA-256: dcb0be4cfaac53d271107b11d60cc30ac465ac1e2774a132a1106672ce3d7c42

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