Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19e699139c822f4…

MALICIOUS

PDF

46.6 KB Created: 2020-08-18 19:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfa8605edb2fe2e2fea3e6cf0b242c65 SHA-1: 79b6bbbebdaffa5d7955d8fbed6e51fc7444b0ec SHA-256: d19e699139c822f43ce10982f12f6fc59b11e044bdccb61e44b275f5730b313e
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=affinity+publisher+photo+book+template, which is a known malicious redirector. This suggests the document is designed to lure users into clicking the link under the guise of downloading a template, ultimately leading them to malicious content.

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=affinity+publisher+photo+book+template
    • http://files.cppbap.org/uploads/1/3/1/3/131380546/vobamaxatabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2913/4487/files/gitudebenedem.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6582/files/mixenofepup.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/tawolonuribupivugisoreji.pdf
    • https://cdn.shopify.com/s/files/1/0450/0311/2616/files/amnagement_du_territoire_madagascar.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/surajadimekemusokujor.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/laxomipuwosigazumuwix.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/mabenuxovufevow.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/68252759140.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/tamil_movies_free_isaidub.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/81105534862.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/pasiminuxukiwujazabiwiren.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_off0000785b.bin
418de483f4db2c3d50e9e3f10301b78cf135b7dcb840dd2905b0696eea719e61
pdf-font-stream PDF embedded font (sfnt) at offset 0x785B 5436 bytes
font_01_sfnt_off00008aa7.bin
9eeffaddaac6e8f7d0f1710e4fc5229480ad36aa4d02b60aa0bb40f80e6cebd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA7 10288 bytes