Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ca1c717dd0c493c…

MALICIOUS

PDF

37.5 KB Created: 2020-08-31 22:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 506c69a32e616743ee6aecd280daf9df SHA-1: 50006faabe1214ba49a5dcee027ac17e684feb35 SHA-256: 6ca1c717dd0c493c52c07dabc001ea1b26d5950d7077c1f7bd7e596e0f71081b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The primary malicious link, 'https://ttraff.com/pify?keyword=graphicriver++topfiles+org', is designed to lure users to potentially harmful content. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or create a link farm, further indicating malicious intent.

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=graphicriver++topfiles+org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/25820253926.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/robotic_surgery_history.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/75495808906.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8543/8884/files/heroes_of_hammerwatch_sorcerer_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/8312/7191/files/7268517624.pdf
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/antenna_wifi_usb_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/7991/5937/files/gebometowulejakez.pdf
    • https://cdn.shopify.com/s/files/1/0433/2929/0390/files/free_sheet_piano_let_it_go.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/muwateziwodejegesatixega.pdf
    • https://cdn.shopify.com/s/files/1/0433/2873/3352/files/marriage_d_amour_music_sheet.pdf
    • https://static.usrfiles.com/ugd/83b1b3_87252309951749d8a4648e7ffd1eb4d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_c35bd179ac7a4036a742c1aa8f7f46b5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047ac.bin
6a486bc1635480e428c257783371485682b30395a42615ffaf35453d4693fe81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47AC 5048 bytes
font_01_sfnt_off00005900.bin
411e0bc3a596d1a4f58d342379aaa38c8c58eda9236b2681bb87d47ea7b8a39a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5900 10028 bytes
font_02_sfnt_off00007b0f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0F 4324 bytes

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