Malicious PDF — malware analysis report

Static analysis result for SHA-256 46feab8e6f99ca2f…

MALICIOUS

PDF

68.7 KB Created: 2020-08-04 21:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7c461c1e1ba57bf46ef8827ab4a681c SHA-1: 697ce9a62ba50386d36d407f10f1bef759a2816b SHA-256: 46feab8e6f99ca2fb7f81d1dac1344c3afa7e9a7e3497a3ac7dfc434555c05e3
152 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. Additionally, it contains a mass of external PDF links, indicating a link farm designed to distribute malicious content. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be luring users to click on these links, which then redirect to potentially harmful sites.

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.cc/pify?keyword=uniqueness+theorem+electrostatics+pdf
    • http://files.powerlandrealty.com/uploads/1/3/2/7/132740260/7668556.pdf
    • http://files.mapexpng.com/uploads/1/3/1/4/131452938/xobodamutapazak.pdf
    • http://files.poisonivy-designs.com/uploads/1/3/1/3/131378950/4765615.pdf
    • http://files.fineartbyrachel.com/uploads/1/3/2/6/132696414/mefelonaminutiveni.pdf
    • http://files.sunsolutionskauai.com/uploads/1/3/1/6/131606546/viwidujeloz_rituwuf_dixej_jitim.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0118/files/22632690648.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/18515422853.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/mufemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/volkswagen_jetta_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/51707768984.pdf
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/wuwatekuviropafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/rival_crock_pot_smart_pot.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/22432397548.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdf
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/16753623837.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_off0000c5fe.bin
dab2a467297b0ca872814ed21a93672e995bd62bc8d66be488ecde67b2355929
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FE 5512 bytes
font_01_sfnt_off0000d894.bin
6006e9fbad6f2b5899bd4ff3242a9c3f9f27c9ea76cbc2bd431c844c1edb071b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD894 14384 bytes