Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb5bb0883486d95…

MALICIOUS

PDF

66.5 KB Created: 2020-08-19 02:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db5915b147df113f6ea19807f4cd7028 SHA-1: 9780c2a0c68c428f3a1916b66279926f4d809840 SHA-256: dfb5bb0883486d9547f7cbda831b7595b5693ef89bd6944c30077ca999380123
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.com/pify?keyword=becoming+a+professional+life+coach+free+pdf', is flagged as a malicious redirector. The document body also contains this URL, suggesting a lure to download a 'free pdf' which likely leads to a malicious site. The PDF also hosts a large number of other PDFs on Shopify, potentially for SEO manipulation or to blend in malicious links with benign 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.com/pify?keyword=becoming+a+professional+life+coach+free+pdf
    • http://zujageka.fitzgeraldga.org/uploads/1/3/0/8/130874284/82c61.pdf
    • http://files.snowsbendfarm.com/uploads/1/3/2/6/132681342/mupiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/bartolomeu_anania_biblia.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/vomaxaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5816/6941/files/avast_license_key_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/79000958931.pdf
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/castor_beans_production.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/fividisubizelowoxujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2411/4076/files/lilum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/fogixenozururasuxejowosep.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b86b.bin
ad5d6ecf524a2ea583c36afa9556fd980b99de3865c7114d6324ca64b4b5553b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB86B 5328 bytes
font_01_sfnt_off0000ca47.bin
e89c7f9f2b452cafe549bede4a0b4f712f485dad7b1a6f5102b2f5e0ff099725
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA47 10748 bytes
font_02_sfnt_off0000eebf.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBF 4324 bytes