Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f552ae80972b738…

MALICIOUS

PDF

47.4 KB Created: 2020-08-20 05:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7570ce34bb7ace9cfd821ddd31e1c4fe SHA-1: b42bf657a8fb28d82753d35adf48a66766276bfd SHA-256: 5f552ae80972b73852f3c7296540f842ceccf4633971cd828d853a32c53659e6
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious objective. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of numerous links and the redirector points to a phishing or SEO poisoning campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=car+games+ing+fast
    • http://files.virginiasumnerart.com/uploads/1/3/1/4/131409677/5294fa4.pdf
    • http://files.mrlukewayne.com/uploads/1/3/0/7/130775429/b135ce.pdf
    • http://files.classicfilmworks.com/uploads/1/3/1/8/131871954/tuwovesis-lerafo-zinivotabanuj.pdf
    • http://files.whyportugalnow.com/uploads/1/3/1/6/131636980/jegimokis-gatumemovoguxo-jexijivume-vavewariroferi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/0660/5987/files/94836197252.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8078/files/30245906358.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/embedding_a_gif_into_a.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/69682259542.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/80892009440.pdf
    • https://cdn.shopify.com/s/files/1/0433/3463/1579/files/dewimitudusamitopupavita.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9177/files/basic_civil_engineering_ktu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/simaxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/rogue_warlock_multiclass_5e.pdf
    • https://cdn.shopify.com/s/files/1/0462/9882/4864/files/kekasixanefuripu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f73.bin
a13e0778a47a7c92cef18d7550ebeb1bb1363027cd5abb8cd9f9c6c60b0e4bb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F73 4756 bytes
font_01_sfnt_off00007f7f.bin
d25d033740be0be4902f3f5627e42856f3251afc2fbf19b51111a3507c57a757		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7F 10328 bytes
font_02_sfnt_off0000a2c9.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C9 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.