Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd0434a84650a7b…

MALICIOUS

PDF

46.4 KB Created: 2020-08-12 23:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32905eceaad2a9cb59f22306ccda8657 SHA-1: b37493b3b313c7886a8600fa9b1a901b2748908c SHA-256: 9fd0434a84650a7b291fec73747e2ac624c4942f2c8f5032231f8cdc4a9560ac
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination. The document body and embedded links suggest a lure related to 'Honda bike spare parts price list pdf', aiming to trick users into clicking the malicious URL. The ML classifier strongly supports the malicious nature of this PDF.

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=honda+bike+spare+parts+price+list+pdf
    • http://files.markparadispolitics.com/uploads/1/3/0/8/130814588/gejapuzatumam.pdf
    • http://files.natgastrucks.com/uploads/1/3/1/4/131438137/c905d5.pdf
    • http://pisuzet.raphaelchurch.org/uploads/1/3/1/4/131453247/remagileziw.pdf
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/92278225883.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/68914921043.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/58733452421.pdf
    • https://cdn.shopify.com/s/files/1/0438/3067/3565/files/derug.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/47383137344.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/aws_reinvent_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/entrepreneurship_theory_process_and_practice_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/understanding_china_through_comics.pdf
    • https://cdn.shopify.com/s/files/1/0432/6899/7286/files/critical_mass_theory.pdf
    • https://cdn.shopify.com/s/files/1/0428/7725/5836/files/tapamuvot.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/18018379641.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/ghatna_chakra_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/10483190860.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_off000076cb.bin
874fef3863b5301c002398af8ea9dba9fedf59b4085f3ad4917fed8aedfcef66
pdf-font-stream PDF embedded font (sfnt) at offset 0x76CB 5316 bytes
font_01_sfnt_off000088e6.bin
16e67a70febf22f7d00bfe50f52c65966da36c1f492a4660203b1d8ce6751c4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x88E6 10324 bytes