Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a809e1875269b2…

MALICIOUS

PDF

41.0 KB Created: 2020-08-19 08:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d481f0a842a6e64e0016274746ebd095 SHA-1: eabeebd5b1ac3995a07c1be6c05e7bad5237f5cb SHA-256: 09a809e1875269b2c35732648fc78b719fcfc743e9a22021371367eae73532e6
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, likely as part of a phishing or scam campaign. The document body and heuristics indicate a lure related to 'Centrelink online application forms'. The presence of numerous external PDF links, many pointing to Shopify, suggests an attempt to obscure the malicious redirector and potentially engage in SEO manipulation for broader reach.

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=centrelink+online+application+forms
    • http://nipadil.adelanteyouthmission.org/uploads/1/3/1/8/131872055/zalijonesep.pdf
    • http://files.tummyandtot.com/uploads/1/3/1/8/131872037/maxorademuzujizuki.pdf
    • http://files.loveaffairwiththyself.com/uploads/1/3/1/4/131437174/naxega-tovewa-mosasuwile-latokavazobuv.pdf
    • http://joguxeke.loveberri.com/uploads/1/3/1/0/131070382/223645.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/afsana_khan_all_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/mesoziken.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/joyce_meyer_be_anxious_for_nothing.pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/79457908595.pdf
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/89829348735.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/kafetawegoxipimupo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/99380227051.pdf
    • https://cdn.shopify.com/s/files/1/0441/0179/5992/files/boolean_algebra_laws_proof.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/catchers_hack_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0920/files/nives.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_off000063db.bin
fec1bc45c8b1c8bf39290b8542419c0ce3dd98e44376c3e952f55ec9cb14f8db
pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 5132 bytes
font_01_sfnt_off00007536.bin
72dcc9216236702267c09e87557c049435adfe131ae890ad077b1f6bef51954b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7536 9824 bytes