Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36b583040ea96d7…

MALICIOUS

PDF

54.3 KB Created: 2020-08-13 06:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a20146cfb3007718723bbf91216e46b2 SHA-1: 12b9d7c7c2ade1068b0fa80bafc64a4acf8f2388 SHA-256: f36b583040ea96d7446506e4b2f1a2f170f9a39ba15897c73657643ca71e697d
150 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a camera manual. The link points to `https://ttraff.cc/wb?keyword=camera%20nikon%20d3200%20manual`, which is a known malicious redirector. The file also exhibits characteristics of a PDF link farm, with numerous external links, many of which are hosted on Shopify. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wb?keyword=camera%20nikon%20d3200%20manual
    • http://files.rbbf.com/uploads/1/3/1/3/131379396/023afe25e103fb.pdf
    • http://files.southorndollstylequeen.com/uploads/1/3/0/8/130873861/mesividetos_vutotif.pdf
    • http://files.mattakehurst.net/uploads/1/3/0/7/130740323/diribabebada_suxarebesu_fopigagagamo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54686169254.pdf
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/fojalawadataratobe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/que_es_acreditacion_universitaria.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/manga_drawing_tutorial_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/1762/4990/files/fogajimati.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lorabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/kumideba.pdf
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/bawirunezuzoromif.pdf
    • https://cdn.shopify.com/s/files/1/0445/3181/0463/files/parasitoids_behavioral_and_evolutionary_ecology.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/19246375773.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/beautician_resume.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/tivejodenegexafifene.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/rinevade.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6370/files/78390814329.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_off00007c6d.bin
97b2a2a012ac45f8283980668d11c5e460ce16ea810e0a7f340b364a0e09a13b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6D 5200 bytes
font_01_sfnt_off00008e06.bin
bda799fa2e564c75dedfcedd470e6152286a5005abe8b2852b0fcd228def56b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E06 11312 bytes
font_02_sfnt_off0000b489.bin
d2dbedc23249eed12779007d0c58b566766b7d8fb5b0bb1d603b2aa598fde09e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB489 16684 bytes