Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f3d466d4b80c66f…

MALICIOUS

PDF

44.0 KB Created: 2020-08-22 08:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bc3878a93ce33770c9d6decb752e779 SHA-1: 833a9bc6015c44a4aca37a6c4209974791811472 SHA-256: 6f3d466d4b80c66f8932984ec78498b034861bc295c1d40858c06021f7f17484
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though partially corrupted, mentions 'free sleek modern powerpoint template', suggesting a lure to entice users to click the embedded links. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful sites.

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=free+sleek+modern+powerpoint+template
    • http://files.afterhoursbandus.com/uploads/1/3/1/4/131454634/nanozeporiwi.pdf
    • http://files.induetwithgod.com/uploads/1/3/1/8/131871729/nabipanulijajuw.pdf
    • http://files.oceanetterrastudio.com/uploads/1/3/0/7/130739772/gimisu.pdf
    • http://files.leadinggreendistributing.com/uploads/1/3/0/7/130740264/f897ce9656ee4b4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/7177/4615/files/11562028601.pdf
    • https://cdn.shopify.com/s/files/1/0436/3495/0304/files/zodefomanonun.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/93589042582.pdf
    • https://cdn.shopify.com/s/files/1/0434/4191/4018/files/applied_economics_rex_bookstore.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0432/3855/5805/files/12449606446.pdf
    • https://cdn.shopify.com/s/files/1/0437/2257/1930/files/msc_biotechnology_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/secret_of_mana_2_rom.pdf
    • https://cdn.shopify.com/s/files/1/0433/1628/1512/files/research_paper_outline_format_template.pdf
    • https://cdn.shopify.com/s/files/1/0439/5512/6430/files/lunipokemazojewidu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/bebagox.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_off0000601c.bin
857bc7bc9839175a40e41e204ae7648aa75c54f9143b364ba71bed5f70e3c9ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601C 5004 bytes
font_01_sfnt_off00007114.bin
61faa0fc2829c27783abda22fb858c7dd5955e164bdb8f6061273840b2ae04fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7114 10496 bytes
font_02_sfnt_off000094fd.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94FD 4324 bytes

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