Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06caa9f06160811…

MALICIOUS

PDF

39.7 KB Created: 2020-08-11 06:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ed48f6d237254260609f57fb2114bfd SHA-1: bbad345fe0a05652602c6f77a9965852b3021119 SHA-256: b06caa9f06160811d98188d1758c1b260478ff2671460855bbb383a2b2f45792
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=carescape+r860+service+manual+pdf', is identified as a malicious redirector. The document body, though obfuscated, appears to contain text related to a service manual, suggesting a lure to trick users into clicking the malicious link. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm strategy to distribute the malicious content.

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.ru/pify?keyword=carescape+r860+service+manual+pdf
    • http://tekazu.efhstsa.org/uploads/1/3/0/8/130814328/tukudob-guvejuwaxawop-jadanowegow.pdf
    • http://files.millerparentclub.com/uploads/1/3/0/7/130776394/dewigekipawo.pdf
    • http://files.yourpassionategroomer.com/uploads/1/3/1/6/131606346/3709074.pdf
    • http://files.peakhealthcaremaryland.com/uploads/1/3/1/4/131406816/rizapisopasiraluzoga.pdf
    • http://files.systech.ch/uploads/1/3/0/7/130739769/sosusinomepuve.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/28021490425.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/princess_maker_2_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/titawitijidejugevetotet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/88444950414.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/41058880348.pdf
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/27983899491.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/java_decompile_linux.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/zirajuluwudegavugoder.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/puvamazodun.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/nexifenuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2167/files/ramonamuseluzezozokopitum.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_off00005be7.bin
d8c18b4ebc31e32e88267f6700e055a064205af40d90737eb185f0de6663e1dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE7 5756 bytes
font_01_sfnt_off00006f6f.bin
41424282244193957ec202d93ffd14ebca1b1ea700ebe6c3f6a9a568efc3463e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 10140 bytes