Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f65c0a53bfb14a…

MALICIOUS

PDF

49.4 KB Created: 2020-08-02 10:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 231e1e07e76b7146b38180c0ae2e5b5a SHA-1: 028cd15227f34d192a8165277a39a8fb5582a7ac SHA-256: 00f65c0a53bfb14aa0d060bf8e1e5c6604af0b49d6960b308200b30f355e553c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=vw+service+manual+pdf`. This link is presented within the document body, suggesting a social engineering lure to trick users into downloading further malicious content. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to host additional malicious payloads.

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=vw+service+manual+pdf
    • http://files.missmarci.com/uploads/1/3/1/8/131857383/vuwub_bobuwegox_wemuk.pdf
    • http://files.elationcommunityvoices.com/uploads/1/3/1/4/131408798/pexojar_ketoluxuxu.pdf
    • http://files.petdishweekly.com/uploads/1/3/1/1/131164063/sinabib-reroruge-tadopimeroteve-luxamevedizi.pdf
    • http://files.catheymccrary.com/uploads/1/3/0/9/130969656/d9786897d8f8e.pdf
    • http://files.visualgoo.com/uploads/1/3/1/3/131398406/8289045.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/30034864976.pdf
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/35861465474.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/9212496650.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/20392203934.pdf
    • https://cdn.shopify.com/s/files/1/0431/7190/5698/files/selipobenivinaximaxaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/8972/9438/files/fanuc_teach_pendant_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/ravofivepevufewaxibeg.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/50049636789.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/5793664958.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/xuwekirozikaze.pdf
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/zekopomesubisex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7928/6428/files/gumedol.pdf
    • https://cdn.shopify.com/s/files/1/0435/9965/9176/files/mikigotabe.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_off000075a8.bin
b60ca1b23fd48af7b2a41d9c979c5941495b641ffcfc1119d38318dd9f218fa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A8 5112 bytes
font_01_sfnt_off000086fa.bin
f464d0ff03608e39b8edb625766aef02d97571a6680cea2ae27c3cbc9f80e0a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86FA 10284 bytes
font_02_sfnt_off0000aa1b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA1B 4324 bytes

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