Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c879d46a6f75e14…

MALICIOUS

PDF

33.0 KB Created: 2020-08-16 23:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db773b1c5a6e059122599df5d4d17aff SHA-1: ee77e0d954a67483f3e0f579b9b99f48aa51a822 SHA-256: 3c879d46a6f75e14555da6e9f707b61b8f478952520c08938e52442266533069
152 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a large number of embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.cc/pify?keyword=allah+names+ringtone'. The presence of numerous links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic, potentially leading to malicious content or phishing pages.

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.cc/pify?keyword=allah+names+ringtone
    • http://files.gandmam.com/uploads/1/3/2/3/132303019/topobanaziliti-giloneli.pdf
    • http://files.moirajo.com/uploads/1/3/2/7/132710655/6052939.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/ordering_decimals_on_a_number_line_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/disadvantages_of_plastic_bags.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/biology_textbook_college.pdf
    • https://cdn.shopify.com/s/files/1/0439/0433/6040/files/system_requirement_specification_document_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/basozowolunimubezuwabowab.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2652/files/fafulubiwuxurerinobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/femepotufitaxaturu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/wegawipajanedizugip.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/bekoluvoludu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/xidanafudivujap.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_off000047b9.bin
8c2e467253e858b31121fca03393f48c84fc415112abecb75c1efc9de00f4cf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x47B9 5088 bytes
font_01_sfnt_off000058d0.bin
73fac46b7545f2e0ebf157d8a228b23c6216e5db8033a5ec6fdde5981aa01aae
pdf-font-stream PDF embedded font (sfnt) at offset 0x58D0 9032 bytes