Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0606aaf226153c…

MALICIOUS

PDF

58.1 KB Created: 2020-08-21 18:56:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a219c0ac210dcf828c81cc1a413d62d5 SHA-1: 49bbdef4b5da065f6980e0526f3e5209a7d417a3 SHA-256: 8b0606aaf226153c845dd901920438a32b7381e7bec4a6295a466bfc6773792e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a download for 'Brawl stars apk mod money'. The document also functions as a link farm, hosting numerous other PDF files on Shopify domains, likely to improve search engine ranking and obscure the malicious intent. The ML classifier strongly indicates maliciousness.

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.com/pify?keyword=brawl+stars+apk+mod+money In PDF document text
    • http://lupopi.upholsteringmelbourne.com.au/uploads/1/3/1/0/131070571/1889904.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/1/0430/4420/8797/files/muwevepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/dmv_practice_test_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/algebra_questions_for_cat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/voganovanulorafaget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11147191401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/91311585713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6318/9405/files/factorio_balancer_blueprint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0825/files/baduwevogilofagixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3595/1257/files/netobinezowevonaviges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/basic_environmental_engineering_elementary_biology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6043/5871/files/lozotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/davipu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000669b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669B 2880 bytes
SHA-256: 619a44e8b5c2a2d3fc0e18259d8022938ad4f8b30552901bc68dc41c3d0f2ef0
font_01_sfnt_off000070d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D9 5152 bytes
SHA-256: 472b76e059d1a6f8df3688fea87a1b983b987e65da55e237cf401c4543cdac62
font_02_sfnt_off0000825a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825A 9000 bytes
SHA-256: 83b962c9724df07515e466640e7fea3d649a910669172684b2fcd70b30e49d5f
font_03_sfnt_off00009478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9478 10128 bytes
SHA-256: 2daf8e00e6347e84ad60ee5d1f7c80587ce8ddc1748ea35419745d6a35e4af1b
font_04_sfnt_off0000b76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB76A 16136 bytes
SHA-256: 3f401360053e1b4d29c24019386b3079856d27c1a6fb1731fc2abffa1f8e552c
font_05_sfnt_off0000cc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176