Malicious PDF — malware analysis report

Static analysis result for SHA-256 047adc5c8476f756…

MALICIOUS

PDF

39.0 KB Created: 2020-09-16 21:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce9e4471e1a5b5d53e8fcb7fc3ac62de SHA-1: 1077210e4e1784e39ab60db9f981a8358a6bf5e8 SHA-256: 047adc5c8476f75653ae1bec061f3745dc44e282083aa6aafcb3be85651d9c38
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to a lure for cracked software. The document body and heuristics indicate a tactic to drive traffic to external resources, likely for malware distribution or phishing. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in obtaining software illicitly.

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.me/wix?keyword=tiny+scanner+pro+apk+cracked+free+download
    • http://vizon.earomiphoto.com/uploads/1/3/1/6/131637308/6333841.pdf
    • http://rikos.fishmougey.com/uploads/1/3/0/8/130813042/4121722.pdf
    • http://balasoti.alantong.com/uploads/1/3/0/7/130775413/rododunukina_simebap_merolelijosa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6697/3598/files/4009986532.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/68034066310.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/vudekadezikuzapum.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7959/files/sezopasuzixevudodelo.pdf
    • https://4167fa27-5226-416f-b0a6-c9d0c2abbec1.filesusr.com/ugd/d5d855_9d785c7964c74854bedda3d2a4491d14.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/55524309305.pdf
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/chinese_zodiac_signs_years_chart.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_off0000593a.bin
98faa77248057745a376a7477f8ebd1e96c724852d6d3d1b0a7262340dd771f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x593A 5356 bytes
font_01_sfnt_off00006ba0.bin
0da81e2dd36a805eef284d7436ecc48b0a38f920cb32983c74ec6ff26cc51180
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA0 10552 bytes