Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1b4092239fba99…

MALICIOUS

PDF

45.0 KB Created: 2020-08-13 23:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec6e98ae5659617252d587fe7ac7c83e SHA-1: 3485b09e17b3f56115d1a6bd2376e2ca3a5401f0 SHA-256: 0e1b4092239fba99e59338545dae6bd6363cfc968d803efb90bcefdcec1889b3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to external PDF files, suggesting an attempt at SEO poisoning or link farming. One prominent URL, 'https://ttraff.com/pify?keyword=oxygen+not+included+guide+tips', is identified as a malicious redirector. This indicates the document's primary purpose is to drive traffic to malicious infrastructure, likely for further exploitation or advertising fraud.

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=oxygen+not+included+guide+tips
    • http://files.sydneyinsightmeditators.org/uploads/1/3/1/3/131398095/zolesifufurezevijuz.pdf
    • http://wopelalew.zakeryrey.com/uploads/1/3/1/3/131384635/kilatuxatuxevu-duwotezajakapom-bajutenafim-kuvorusigaxi.pdf
    • http://files.ncpimaging.com/uploads/1/3/1/6/131607943/ketotedebazisam-zalunasar-xamujiwidabo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/toxol.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/bodopos.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/vuforotavuworujur.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9970/files/29925466622.pdf
    • https://cdn.shopify.com/s/files/1/0431/1387/3569/files/life_beginner_teacher_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/kivowik.pdf
    • https://cdn.shopify.com/s/files/1/0433/6333/6350/files/razenusuvo.pdf
    • https://cdn.shopify.com/s/files/1/0449/6778/8712/files/antrenmanlarla_matematik_2_zml.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/vorrel_s_wedding_ring.pdf
    • https://cdn.shopify.com/s/files/1/0433/4170/9462/files/juzizexupebopuvadipoxunuz.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007346.bin
ebdb5495ce3ef846d9157b46d50fa22ad6b1fda1148fa121354cc05df6cf6be2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7346 5132 bytes
font_01_sfnt_off000084de.bin
4b763dfe41f75c4ef3533ec17ec34fdb38e75a2e3271e686cc4403f0d23a61ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x84DE 10044 bytes