Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc43ef980e98f1c…

MALICIOUS

PDF

44.3 KB Created: 2020-08-15 06:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbe6f29a4a793dbb3e65d1d4f1d8c07c SHA-1: b719df4b791e45f873d9104c0697a4f9a8bab14c SHA-256: 6fc43ef980e98f1c17a5386b7f11b97e2fb0eca14ed3a5ecabdf3b58a9f41641
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector, identified as malicious, which likely leads to further malicious content or malware. The document body, though partially corrupted, contains the URL and appears to be a lure, possibly related to a game guide, to entice users to click the malicious link. The presence of numerous other links, many pointing to benign Shopify URLs, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector.

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=creature+of+fenkenstrain+guide+osrs
    • http://files.dancing4donations.org/uploads/1/3/1/6/131636651/8187779.pdf
    • http://files.nabangapikinini.com/uploads/1/3/1/3/131398369/4c9d6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7319/8497/files/cd4538bcn_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/batib.pdf
    • https://cdn.shopify.com/s/files/1/0434/2674/2421/files/encyclopedia_britannica_all_volumes_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/60929193543.pdf
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/18458605051.pdf
    • https://cdn.shopify.com/s/files/1/0433/3296/0409/files/java_spring_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/besonumapazenanim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/mumetofaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9784/1054/files/kubota_zd326_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/el_accidente_nuclear_de_chernobyl.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/subject_verb_agreement_practice.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/jogigizazuzuxafusomek.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_off00006ffa.bin
b9d7b2ded7e085749ef6912c749be1e9aa12b0578e035ba26774ef0230f0f768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFA 5012 bytes
font_01_sfnt_off00008113.bin
a493c067f72ae12a8316b3e11a1f5541c4d490a261bcf78a4f8db44f992657a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8113 10388 bytes

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