Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd67cfa46b9423a…

MALICIOUS

PDF

50.1 KB Created: 2020-08-25 02:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4cd4b6547dd71e30b027ad6f3521d13 SHA-1: b57e2220f1c981bea5fecc18b3e95f7c75084e3c SHA-256: abd67cfa46b9423a0d68bf25c497ee19055529e3c83790eed7bcb8a7087dba48
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=angry+birds+transformers+telepods+heatwave'. Additionally, another critical heuristic indicates a PDF link farm, suggesting an attempt to distribute malicious content. The ML classifier strongly flags this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient to infer the attack pattern.

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=angry+birds+transformers+telepods+heatwave
    • http://files.dallasclarnette.com/uploads/1/3/0/9/130969879/lusivokos.pdf
    • http://nonenif.keswickumc.com/uploads/1/3/0/7/130739654/bevekaja.pdf
    • http://lozezad.aurorafashiontrends.com/uploads/1/3/2/8/132816066/poduwuku.pdf
    • http://bugore.lebanonstingerswrestling.com/uploads/1/3/1/6/131606289/d4da483.pdf
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/68202933751.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/68982066840.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1571/files/menegibaleroxulijumumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/senevifevotatunofuku.pdf
    • https://cdn.shopify.com/s/files/1/0437/2804/4193/files/hex_map_maker.pdf
    • https://cdn.shopify.com/s/files/1/0436/9373/6089/files/55926888781.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/52037029935.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/denanusa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/cast_away_full_movie_tamil_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/96103547060.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.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_off000082f4.bin
e764e821e7ee374e6cdb9fbd9da905dcdcac02db107a1440887deeeed7c1452a
pdf-font-stream PDF embedded font (sfnt) at offset 0x82F4 5840 bytes
font_01_sfnt_off000096ba.bin
3478a8bfe3c9c99036195693ef9248960b416eedb5d50d2e71a46378c9e19443
pdf-font-stream PDF embedded font (sfnt) at offset 0x96BA 10640 bytes