Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1904f993ea0b87c…

MALICIOUS

PDF

30.7 KB Created: 2020-09-04 15:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 012b5342484d7b6c8efbbfce255d194d SHA-1: 6873dd4aa79451810203e8e0bfc8df363d37bb29 SHA-256: a1904f993ea0b87ca35b3adcdb1321dd3a207b1f4af8df862c3777b6d25dd100
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was identified as an image-only lure, typical of phishing campaigns. It contains a critical link to a known malicious redirector, ttraff.me, which is likely used to funnel victims to a malicious site. Additionally, the PDF includes a link farm pointing to various PDFs hosted on Shopify, one of which is named 'adobe_photoshop_cs6_crack_dll_files_32bit_download.pdf', suggesting a potential software crack lure.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 30 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=accedian+metronid+datasheet
    • https://cdn.shopify.com/s/files/1/0461/8960/9109/files/adobe_photoshop_cs6_crack_dll_files_32bit_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/nuxuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/15057678117.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/33062869826.pdf
    • https://cdn.shopify.com/s/files/1/0464/0725/4171/files/hibiscus_flower_template.pdf
    • https://cdn.shopify.com/s/files/1/0462/7582/1728/files/epidemiologia_veterinaria_libro.pdf
    • https://cdn.shopify.com/s/files/1/0429/6540/1753/files/lekelinavopu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4422/files/22780638108.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/78004406779.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/vufujegufakuruxusegabelan.pdf
    • https://cdn.shopify.com/s/files/1/0434/6583/4649/files/kelubopumu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/xajit.pdf
    • https://cdn.shopify.com/s/files/1/0432/7522/3206/files/tzhaar_slayer_task.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5953/files/pipabudamipinewab.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004243.bin
538fdc61ddfc8f0cb404d83487bd9c496d852e7158ed0024a7fc552b15153e0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4243 5136 bytes
font_01_sfnt_off00005389.bin
360c8ceabc7bfdb8da8ad17af1330d41af3f6a314916bc463bbd454485d51424
pdf-font-stream PDF embedded font (sfnt) at offset 0x5389 7828 bytes