Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2905e07fc2602e…

MALICIOUS

PDF

57.5 KB Created: 2020-09-03 01:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 087246596d5dba86745e2cf5d1fa63c1 SHA-1: 6fcf802c80a8a9a7fab4ff811edb2cf6780665df SHA-256: 2f2905e07fc2602edd4620c8c9da38a12b08581a7d5b8fb766a75c901ff9e9f0
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though heavily obfuscated, also contains this URL and mentions 'aubade audio studio full apk', suggesting a lure for software downloads. The presence of numerous other benign-looking PDF links on Shopify domains indicates a potential SEO link farm strategy to mask the malicious redirector.

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.me/wix?keyword=aubade+audio+studio+full+apk
    • https://cdn.shopify.com/s/files/1/0458/9620/4442/files/asos_size_guide_socks.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/92021028126.pdf
    • https://cdn.shopify.com/s/files/1/0433/4714/8950/files/eanm_guidelines_fdg_pet.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/76447670325.pdf
    • https://cdn.shopify.com/s/files/1/0429/2493/3283/files/lixisifavopifezitaxakekev.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/delete_steam_group.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/todasasejegaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/4116/0344/files/chapter_3_journalizing_transactions_application_problems_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/dawujisabadedasudur.pdf
    • https://cdn.shopify.com/s/files/1/0431/0859/7927/files/lonezuletitazomof.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/feeding_guide_for_infant.pdf
    • https://cdn.shopify.com/s/files/1/0433/1244/7652/files/walepowi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/osrs_kq_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/lenapasimekovalib.pdf
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/xowimojasusoleferop.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ef9.bin
6d73c2bc4392b305310e50ab4699856bdfe4086085f317102d0d0b6a526b5690		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF9 5132 bytes
font_01_sfnt_off0000907e.bin
961fd1a803d9ed25e4dff42afd25eda9b04d084cd0920a97c49adf29c3dab805		 pdf-font-stream PDF embedded font (sfnt) at offset 0x907E 3452 bytes
font_02_sfnt_off00009e8f.bin
7cfbd8a9e8509c2ac0eeb7786b7ba31d63d97a70a76affcfb2623707eb972add		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E8F 10772 bytes
font_03_sfnt_off0000c3b5.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B5 16092 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.