Malicious PDF — malware analysis report

Static analysis result for SHA-256 10083378808c498c…

MALICIOUS

PDF

45.5 KB Created: 2020-08-19 01:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ab964e44e6559de74f0b0e70553f451 SHA-1: c90b22826a69c4cd2c5dba54cea6398afc275081 SHA-256: 10083378808c498c3e6b43a22095bdaafc29f64537583b534689139338f6070c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector URL that is flagged as malicious, suggesting a phishing or scam attempt. The document body and embedded link text are crafted to appear relevant to 'Alethea international school uniform', likely to entice clicks. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute 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.com/pify?keyword=alethea+international+school+uniform
    • http://files.vibrantlivingmn.com/uploads/1/3/1/4/131482822/42b93.pdf
    • http://files.justpoogie.net/uploads/1/3/0/7/130776558/petanadu.pdf
    • http://namiwivok.wheelsandteal.com/uploads/1/3/1/6/131637135/bigiwavezi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/python_tcp_server.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/99860709236.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/camus_the_myth_of_sisyphus.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/43464921082.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/utsa_one_stop.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/list_of_feelings_and_emotions_with_definitions.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/68040926455.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/59220978242.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/71516237895.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/axis_asap_charges.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007550.bin
718b400d7a4b1e11fd36984a58364dcf9cb2fd2bd7cff692acfcff37f340795a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7550 5112 bytes
font_01_sfnt_off0000867d.bin
36ea45d322cfe5f20c8c003137dabe6669b851143388905e42acb3e8f46f69c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x867D 9904 bytes