Malicious PDF — malware analysis report

Static analysis result for SHA-256 3745530e7d2807c1…

MALICIOUS

PDF

67.0 KB Created: 2020-08-23 00:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c76c9130afba2f37fbdda030b11bde30 SHA-1: 248ae615a61314003fe299ebd431ef7ecc3e6efe SHA-256: 3745530e7d2807c12b9f5f0055f8cacdb2f305c1349e8468c0788018410ec846
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, with 26 pointing to external PDFs hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=aashiq+film+ke+gane', is identified as a malicious redirector. The presence of a link farm and a malicious redirector suggests a phishing or malicious content delivery attempt.

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=aashiq+film+ke+gane
    • http://files.makeupbyeloise.co.uk/uploads/1/3/1/4/131453805/fujipemotiburuzix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9335/1843/files/bose_quietcomfort_25_android_canada.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/15387253228.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/polapepi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/foluxibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/pujitoniwakezeguvif.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/cartoon_font_ttf.pdf
    • https://cdn.shopify.com/s/files/1/0452/5611/4337/files/joviju.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/zoxakumufapepobajot.pdf
    • https://cdn.shopify.com/s/files/1/0435/7714/7547/files/lijiwaxatefofu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5059/files/el_nuevo_cine_mexicano.pdf
    • https://cdn.shopify.com/s/files/1/0428/9393/4748/files/cours_pour_apprendre_le_franais.pdf
    • https://cdn.shopify.com/s/files/1/0433/3371/4070/files/cara_afterlight_gratis_iphone.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_off0000b41a.bin
5eb239b885f8be95f7d7bb40027702bd0772575f33bb8706e2a3880a3e654c28
pdf-font-stream PDF embedded font (sfnt) at offset 0xB41A 4860 bytes
font_01_sfnt_off0000c469.bin
d0c8a5e47c50b1dad276041bbb164791fd2f20174106b3474bb93a7e97d5fb4d
pdf-font-stream PDF embedded font (sfnt) at offset 0xC469 13660 bytes
font_02_sfnt_off0000efa4.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA4 4324 bytes