Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d7153d9eb6bb8f…

MALICIOUS

PDF

44.4 KB Created: 2020-09-04 23:57:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f92b06d640e58179c8a79b28f2c5c4f8 SHA-1: 18ab6106246de238858cc3aead53c7502b31449e SHA-256: 76d7153d9eb6bb8f630dc73310527c0139bb61018733a7db5059ab662bafde0b
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.link/wix?keyword=australian+super+performance+year+to+date', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and references to 'Australian super performance year to date', suggesting a phishing or scam lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm used to distribute malicious content.

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.link/wix?keyword=australian+super+performance+year+to+date
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/zujavujukufuduligura.pdf
    • https://cdn.shopify.com/s/files/1/0465/4383/1198/files/lapopetuvuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/8071/2346/files/70024282839.pdf
    • https://cdn.shopify.com/s/files/1/0437/4423/1575/files/creative_brief_template_for_events.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6900/files/mis_marketing_information_system.pdf
    • https://cdn.shopify.com/s/files/1/0435/1787/0239/files/6094274495.pdf
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/dabokorudopakaxexujedub.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/sixegebusibireta.pdf
    • https://cdn.shopify.com/s/files/1/0435/8343/9003/files/free_to_word_converter_download_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/worthy_of_my_praise_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/4210/2679/files/hindustan_amravati_newspaper.pdf
    • https://cdn.shopify.com/s/files/1/0437/8705/9362/files/najusagevugikexugefe.pdf
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/60763202013.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006da4.bin
29e66dde3e2096d5437041382dcc6688b1f871ca5a8bd40b9ea7bb0457f3d301
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA4 5392 bytes
font_01_sfnt_off00007ff1.bin
2bb2678fb3f9670d3ef4841056c154c80ffb55039acd853fccbf45a468b05902
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF1 10712 bytes