Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b549fb2dcce8ff4…

MALICIOUS

PDF

37.4 KB Created: 2020-08-11 16:39:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a39737156cb14ef19625311d0e45211 SHA-1: 287d5286cac79e2d5903bf52c6db8309b97913ae SHA-256: 7b549fb2dcce8ff485e0548183a5b7fb55c182358e0777552518d6a14eb7f3a7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'Glencoe physical science textbook answers pdf'. The presence of a link farm and a critical redirector firing strongly suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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.ru/pify?keyword=glencoe+physical+science+textbook+answers+pdf
    • http://metido.emanatepresence.com/uploads/1/3/0/9/130969959/wasekafukosofep.pdf
    • http://files.prayerrequestpage.com/uploads/1/3/1/4/131406435/1218416.pdf
    • http://files.acgraleighcapitalconference.com/uploads/1/3/0/7/130738988/wuvosuno.pdf
    • http://files.sjrathreekeys.com/uploads/1/3/0/7/130740513/712913.pdf
    • http://files.hannkhigg.com/uploads/1/3/0/7/130775429/juvodagudije.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/8567/4149/files/soporewin.pdf
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/mabisipozadisepufifo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0696/8483/files/muxutufigiraxarix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/46868529786.pdf
    • https://cdn.shopify.com/s/files/1/0433/9597/3283/files/38083619946.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/29830648687.pdf
    • https://cdn.shopify.com/s/files/1/0437/2620/9175/files/apple_mobile_device_usb_driver.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7020/files/mysql_turn_off_safe_mode.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/gufikulexoworatix.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/87764994446.pdf
    • https://cdn.shopify.com/s/files/1/0436/4995/8046/files/79800994847.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/windows_media_player_11.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_off000051eb.bin
d88463f73a8160f0b6a6d169ef1c7d148ffdcbce1c612c67172f8e2b1033905b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51EB 5740 bytes
font_01_sfnt_off0000657d.bin
b7024eddb92084726a4bf98450cd084e43339e2588f999daced9a266134dffb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657D 10060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.