Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f6a2414cdc20dc…

MALICIOUS

PDF

45.7 KB Created: 2020-08-27 13:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b17217936a1eb273ad926e8e468cdc9 SHA-1: 7c9dd283269740ab0b97739c763f70365c1d995d SHA-256: 19f6a2414cdc20dcb366d53311ee6b6b4d2259792f0bf3c9c989a5f20697c3e0
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to PDF files hosted on Shopify. One of these links, however, redirects to a known malicious domain (ttraff.com), indicating a potential phishing or malware distribution attempt. The presence of a link farm suggests an effort to obscure the malicious destination or to generate traffic. No scripts were extracted from this sample.

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=the+death+of+grass
    • http://gexax.scogbahn.co.uk/uploads/1/3/0/9/130968921/nawuxiji_xefanudejar_pixowixu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/kadabadapedavekepotolugap.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/minecraft_v_1._15_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/49433407460.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/abb_ability_power_transformer.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/52184446880.pdf
    • https://cdn.shopify.com/s/files/1/0450/7402/2550/files/egzamin_certyfikacyjny_b2_angielski.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/34681413912.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/fx_cartoonizer_apk.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2861/files/6926654493.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/whirlpool_cabrio_platinum_dryer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/10412881860.pdf
    • https://cdn.shopify.com/s/files/1/0435/5106/4228/files/40240793508.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0e.bin
f93ce0664e928b005a3bc644e08ba120e00a9b1ba04893c8743bd16e5c5f6427
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0E 4720 bytes
font_01_sfnt_off00007a2e.bin
3feb179899cfeac8f0dba95856d86122ba84ec76e39a956953febd0cb2de965a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2E 9908 bytes
font_02_sfnt_off00009c1d.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1D 4324 bytes