Malicious PDF — malware analysis report

Static analysis result for SHA-256 b283c56011de37d0…

MALICIOUS

PDF

52.6 KB Created: 2020-08-05 17:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc4ecb2160e85e992073d41a2e0d7748 SHA-1: 1701c6451456c5d82a05ab1909928c2b3779da75 SHA-256: b283c56011de37d00e2d1e0d5b3e0af56689b289a9d6a41e07b7096625d58c67
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.com/pify?keyword=anandpur+sahib+resolution+in+punjabi+pdf', is identified as a malicious redirector. The presence of this malicious link and the overall structure suggest an attempt to lure users to malicious content, likely for phishing or malware distribution.

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=anandpur+sahib+resolution+in+punjabi+pdf
    • http://vuzusavu.thedallesvineyard.com/uploads/1/3/1/4/131437615/toxixudisupu_nofaxugajina_bixojik_tanukopitewemi.pdf
    • http://files.mayadrori.com/uploads/1/3/0/7/130740573/sidora-ramiweriwot-piwitowoxa.pdf
    • http://files.pawsla.org/uploads/1/3/0/7/130738696/8085655.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/importance_of_leadership_in_community_development.pdf
    • https://cdn.shopify.com/s/files/1/0432/9301/6222/files/welanasonu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/28886427033.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/ketanudopibozupubumux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevimija.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/33414332782.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/pagigokedeluli.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/36358709626.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/809582179.pdf
    • https://cdn.shopify.com/s/files/1/0428/5127/0815/files/20402318536.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/58769173053.pdf
    • https://cdn.shopify.com/s/files/1/0434/2385/8850/files/52057180935.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/76715283618.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/
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/ketanudopibozupu

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009024.bin
203e1fc5b7097df01a5f54102471e9d7c48754714e684ff9d0019053c4e10d39
pdf-font-stream PDF embedded font (sfnt) at offset 0x9024 5336 bytes
font_01_sfnt_off0000a242.bin
f98f939c3b616a596842b7c8ce007d1b6b5b0d9114c67d56334a8c26d9327e49
pdf-font-stream PDF embedded font (sfnt) at offset 0xA242 10264 bytes