Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0c69aaa16060c2…

MALICIOUS

PDF

59.0 KB Created: 2020-07-30 06:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc0614404d97bd338dd6815b252da12e SHA-1: 57c1807a30db65bb608ab69aa0e11f27211f4651 SHA-256: fd0c69aaa16060c2478668400a4bbcaf7777e747ea7990d800e0344da524f448
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. It also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness. The document body is heavily obfuscated but contains text related to 'actionable agile metrics for predictability pdf', likely a lure.

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=actionable+agile+metrics+for+predictability+pdf
    • http://files.lalunaminiatures.com/uploads/1/3/1/3/131384333/37b2c.pdf
    • http://files.duranet.ca/uploads/1/3/1/8/131856330/6097557.pdf
    • http://files.cbcg-gotomeeting.com/uploads/1/3/0/7/130775921/2d7c990d3.pdf
    • http://files.ohbmbrainmappingblog.com/uploads/1/3/1/3/131382808/rixes_segelolifo_kopasubat.pdf
    • http://files.gardenguildlakechapala.com/uploads/1/3/1/1/131164572/1375705.pdf
    • http://files.lalunaminiatures.com/uploads/1/3/1/3/13138
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/59846867402.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/tojuriv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0259/2410/files/wediwazanitaxomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/35929604368.pdf
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/52202531621.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/jabosuluke.pdf
    • https://cdn.shopify.com/s/files/1/0440/7105/9608/files/3384293546.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/82341659910.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/luselemax.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/budulabobuwa.pdf
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/19854644133.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009242.bin
3a6458e8d8d52d8e21c16562086c3feb2bde5a7895ef6a488c32c46dff6327a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9242 5496 bytes
font_01_sfnt_off0000a4cd.bin
751b0fdceaa7cd0a4a844da538478ffa466b2853da0d474127a518e7dbb1add1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CD 10376 bytes
font_02_sfnt_off0000c86e.bin
6dba5854a972f11ea50690dbd10bd732b527f03a7f02b22fceaad647e390bf0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC86E 16392 bytes

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