Malicious PDF — malware analysis report

Static analysis result for SHA-256 0118485d613c357e…

MALICIOUS

PDF

44.0 KB Created: 2020-08-18 21:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c7a2e85cdfdf98b7b5c4649b03699e5 SHA-1: 74e0e6c466f1b8d3ff6c62a67f2f96efe2aa082c SHA-256: 0118485d613c357e5d55ab19dee3c2ca2c06d878b318b700d8f8779d68ea5919
174 Risk Score

Malware Insights

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

This PDF file contains numerous links, many pointing to potentially malicious redirectors, including one that appears to be a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains text related to 'accounting software tally 9' and a URL that aligns with the malicious redirector heuristic. The presence of a callback lure heuristic suggests a potential phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=accounting+software+tally+9
    • http://linoza.womensclinicatlantaabortion.com/uploads/1/3/1/4/131408899/betewetu.pdf
    • http://mofuv.havenorphotography.com/uploads/1/3/1/4/131407797/2357070.pdf
    • http://dobizuxuv.binghamtonrooted.org/uploads/1/3/0/7/130738730/349b510cd05978.pdf
    • http://files.dianesabo.com/uploads/1/3/1/3/131378835/sigap_boluzoga_vawuveru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/203072192.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7837/files/pajefib.pdf
    • https://cdn.shopify.com/s/files/1/0434/5770/8193/files/aprendizajes_clave_preescolar_educacion_fisica.pdf
    • https://cdn.shopify.com/s/files/1/0432/7967/9646/files/vufopuropalazilesonafib.pdf
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/pokemon_blue_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/10th_science_book_english_medium_in_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/11685373257.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/present_tense_intermediate_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/23513741144.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/66536066567.pdf
    • https://cdn.shopify.com/s/files/1/0451/5728/6042/files/forigopojuxijoputar.pdf
    • https://cdn.shopify.com/s/files/1/0433/4210/2679/files/19582934501.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/88122382664.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_off000060e1.bin
fc0c42eecc57bb2a5cb2ea210e53da182adc4e7b16bb5e8c809768316b21a81f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 5268 bytes
font_01_sfnt_off000072ed.bin
aec56d6f6bdf24ee253dc46e9e9ac0781f4f1a8680efea9028e1ee8766b81194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72ED 9888 bytes
font_02_sfnt_off000094d1.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D1 4324 bytes

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