Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f2282d2f805c534…

MALICIOUS

PDF

49.2 KB Created: 2020-08-21 00:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 918e3a71a36babe019cddd922ab6195b SHA-1: 846f663489fdd9203f6e96508dda5bc8766ab536 SHA-256: 6f2282d2f805c534c39abf3e2a6f76e43109517745cbfe0b01d6020583dae25d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to external PDF files hosted on Shopify and other domains, forming a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=los+angeles+tourist+map+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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.cc/pify?keyword=los+angeles+tourist+map+pdf
    • http://files.waverleyway.co.nz/uploads/1/3/2/6/132683330/jinijup.pdf
    • http://files.nataliavidyakina.com/uploads/1/3/1/6/131606262/buwevusepewofa-narage.pdf
    • http://files.friscoterracepoa.com/uploads/1/3/0/8/130815026/2389229.pdf
    • http://sevizujo.bgsewing.com/uploads/1/3/1/0/131070001/xulet.pdf
    • http://files.liftingheartswiththearts.org/uploads/1/3/0/8/130814283/1117369.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0454/7146/5630/files/18514913016.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2095/files/54914814544.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9576/files/sifemivodalapes.pdf
    • https://cdn.shopify.com/s/files/1/0452/7711/8625/files/free_fire_battle_royale_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/benefcios_da_biomassa_de_banana_verde.pdf
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/wikapuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdf
    • https://cdn.shopify.com/s/files/1/0448/0542/3253/files/beginner_english_grammar_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/fikekazaforopejefis.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/12042553013.pdf
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/deep_learning_autoencoder.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6065/files/50659172320.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/14090806649.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/zirajejejofenojisorimow.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_off000082d4.bin
aa24965403a79e66297a3536a35d0acbe759be2885e48d3532deb126e75bc757
pdf-font-stream PDF embedded font (sfnt) at offset 0x82D4 5300 bytes
font_01_sfnt_off000094c9.bin
9c0607af184a0b598d8ad460f5eea19b625e7318b12defa36f890f8cb5d9aa74
pdf-font-stream PDF embedded font (sfnt) at offset 0x94C9 10120 bytes