Malicious PDF — malware analysis report

Static analysis result for SHA-256 63023f099665a53c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-01 02:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9e7c2feb078e3f436f7f74932b70d27 SHA-1: 51b8f4500c508a912dcd2419142cc223705355d3 SHA-256: 63023f099665a53ce7768158e495e474650fdfe39c51b338d48786e8709dd5b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to a known malicious redirector infrastructure. The document body, though obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=comprehensive+outpost+construction+guide', which is flagged as a malicious redirector. This suggests the document is designed to lead users 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.cc/pify?keyword=comprehensive+outpost+construction+guide
    • http://files.lets-yoga.info/uploads/1/3/2/7/132710603/7866bd4943e0c44.pdf
    • http://files.adoptabasset.net/uploads/1/3/1/4/131407164/givelutavizij.pdf
    • http://files.operanovacr.com/uploads/1/3/0/8/130874360/8958871.pdf
    • http://files.cancercars.net/uploads/1/3/1/3/131379439/fujefum-vajipeziwubex-favovuvabejed-sixuritigoko.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/41928344773.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/7803813607.pdf
    • https://cdn.shopify.com/s/files/1/0437/8161/9861/files/89887434973.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/31222799810.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1189/files/wowifojuxa.pdf
    • https://cdn.shopify.com/s/files/1/0436/3101/8142/files/introduction_to_statistics_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wetitoditasenubekuxon.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/mezutamamobamizomona.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/9564662782.pdf
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/11337325749.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/15937585228.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/28101712454.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/mozafevujenamat.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/wefijovapofuvixovotimeta.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_off00006c20.bin
846008d7630cbbe4815a0937d1a8ab753aa5a0db36bc6e31f421f11e2a356cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C20 5212 bytes
font_01_sfnt_off00007db0.bin
f533f3ce3aed845f4ec39d93fd00a5bacd73c1d3bf8cbbe095245c64bfacce53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB0 9920 bytes

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