Malicious PDF — malware analysis report

Static analysis result for SHA-256 e195fe7804eefbb7…

MALICIOUS

PDF

37.0 KB Created: 2020-08-19 05:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc92ba68f609d59f0fdad2c3ca4b19be SHA-1: 4117649324b1ee9a3ab2b77b32c24360b424388b SHA-256: e195fe7804eefbb7018c813f8e1c95c91c0538d39a722a46ba5468fdba772d98
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.com'. This suggests the document is designed to drive traffic to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=ben+hur+sheet+music+pdf
    • http://files.ahaecker.com/uploads/1/3/1/8/131857112/c8e39af59d96.pdf
    • http://files.kindheartedcompassion.org/uploads/1/3/0/7/130775982/jomizinesutavosab.pdf
    • http://zutenez.jumpinrealestate.com/uploads/1/3/2/8/132814930/ropegel-xaremifofe-rupudonura.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/zewudovevarexulisobajawot.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/los_angeles_dodgers_schedule_2020.pdf
    • https://cdn.shopify.com/s/files/1/0448/1345/1430/files/types_of_genetic_polymorphism.pdf
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/contoh_karya_ilmiah_tentang_bahaya_merokok.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/4817530049.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3574/files/54446501678.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/zusevuderuxilemowagawiw.pdf
    • https://cdn.shopify.com/s/files/1/0436/4120/8992/files/79437872219.pdf
    • https://cdn.shopify.com/s/files/1/0430/1638/8761/files/70269566915.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/25369625407.pdf
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/36032482250.pdf
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/67658653179.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_off000052a4.bin
5ac6061d2baec1cb825444df76c4b6930308c3970509b9d245477d3250e558bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x52A4 5204 bytes
font_01_sfnt_off0000642c.bin
a45734a1f7c557e760cfce8e762b1699b26291658e91d6e7e28face5361a8147
pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 10332 bytes