Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29c39c740285a67…

MALICIOUS

PDF

41.5 KB Created: 2020-07-08 17:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3c7c6aa0a046906c0b6317e2e51fa43 SHA-1: 5ef8b584989a89092d6a70b2a0dc595441ae4e67 SHA-256: e29c39c740285a67c85d3ae8d584db9502a701d3936f5a2658e7a65a27f319b4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The primary link redirects to a malicious URL, suggesting a phishing or malware distribution attempt. The document body, while containing garbled text, includes the phrase '2018 volkswagen tiguan se owners manual' and the malicious URL, reinforcing the lure. The ML classifier strongly indicated maliciousness.

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/wb?keyword=2018%20volkswagen%20tiguan%20se%20owners%20manual
    • http://files.innerdolphinawakening.com/uploads/1/3/1/6/131606035/kumuvefajolen.pdf
    • http://files.hispeedkitchens.com/uploads/1/3/1/0/131070116/tubak-gujamerinuza-foririk.pdf
    • http://files.bluebearwalhalla.com/uploads/1/3/0/9/130969386/9878963.pdf
    • http://files.afinoentertainment.com/uploads/1/3/1/4/131437513/3241591.pdf
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdf
    • http://files.atartisticexpress.com/uploads/1/3/1/4/131409127/larile_mokufotuzezuvop_rixobuwijikola.pdf
    • http://files.hlfmgoats.com/uploads/1/3/1/3/131383553/jopaxubesoz.pdf
    • http://files.theskinthatburns.com/uploads/1/3/1/1/131164534/f66e7e2f6bf.pdf
    • https://fekaxifoz.files.wordpress.com/2020/07/89963024921.pdf
    • https://jojexit.files.wordpress.com/2020/07/malupawapevezozup.pdf
    • https://nopibakemega.files.wordpress.com/2020/06/44332524793.pdf
    • https://busamonavek.files.wordpress.com/2020/06/35812799284.pdf
    • https://lezufapemuz.files.wordpress.com/2020/07/86982620920.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062a2.bin
28d1d77401749620ced786ecd019f59d0d6aecb7f5c9b36bbe5b71d94208c56b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 5528 bytes
font_01_sfnt_off00007561.bin
55f86ce7efd627b8ef8444ce19be822546b09fefe61bfad1fe57024abc04a8f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7561 10392 bytes

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