Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3bcf4baa012d6a…

MALICIOUS

PDF

37.4 KB Created: 2020-08-16 16:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d46d3f6e1e32541d5ecbd3a8d391eb26 SHA-1: c41652927b406de2f3621d7a4f1d0d2f2e153ecd SHA-256: 7b3bcf4baa012d6a27964dc6953ede8172b10e9689245cb8374719e3b5c23b81
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to a 'Sony cassette walkman guide' and embeds multiple links. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), which is also present in the document body. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution, masquerading as a helpful guide.

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=sony+cassette+walkman+guide In PDF document text
    • http://files.doeatjangkir.com/uploads/1/3/1/6/131607163/dododotibijib-betovixuwadeno.pdfIn PDF document text
    • http://luputod.riverstonegallery.net/uploads/1/3/2/3/132302870/xopaviwuje.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/1/0435/9146/7176/files/b._sc_1st_year_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/62527452815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/10116551490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/21824932529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6187/7663/files/carian_cole_no_tomorrow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/ala_baburao_dj_song_320kbps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9462/8769/files/abcd_tamil_dubbed_movie_in_tamilrockers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/detozepamodavewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/patunufujinoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3901/files/mipoz.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
🗂 Part of campaign: serendipitygarden.ca 8 samples

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_off000051e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51E0 5524 bytes
SHA-256: ddba279fceadc31e2dff06c7ddecc68a5e2ff20011910f94b87f41c790b1f1e8
font_01_sfnt_off000064b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B9 10664 bytes
SHA-256: 13ad2ac56ceb926a7e2b3921d80f5632407cef3a253346eb3e8db8ca4d0a8981

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