Malicious PDF — malware analysis report

Static analysis result for SHA-256 1204f7a74b15207a…

MALICIOUS

PDF

53.2 KB Created: 2020-08-02 10:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0292aac7fb229e1acee3ebc507a38b8 SHA-1: cdbb09d1fb9723e57a1c246ec2ddf28182846e0f SHA-256: 1204f7a74b15207afd5bedd15ab78b7f5c18df6612887ee11f0ebc3e71731976
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, constituting a link farm designed to direct users to external content. One of the primary links, 'https://ttraff.com/pify?keyword=tecumseh+carb+identify', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to manipulate search engine rankings or to distribute malicious content through a chain of redirects.

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=tecumseh+carb+identify
    • http://files.thevillageyarnery.com/uploads/1/3/1/4/131437119/jigutesapirulipo.pdf
    • http://files.oscargil.org/uploads/1/3/0/7/130775032/3779247.pdf
    • http://files.zionpainesville.com/uploads/1/3/1/6/131636819/cb4a2a042f36e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/2801683570.pdf
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/92539673454.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/mutasojupiwomofegezizoxi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2353/0141/files/77348129055.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/sosojowulagugeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/9794/7300/files/xowukir.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/96188495519.pdf
    • https://cdn.shopify.com/s/files/1/0428/7388/0739/files/joxizuxasopunojinexox.pdf
    • https://cdn.shopify.com/s/files/1/0434/6501/5446/files/pawoxusemijud.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5208/files/6041220727.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0920/files/17704318049.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_off00007d2c.bin
23eb61d4d28366df3170c8bf2647064f91f47e0c64a6803c90e9991aa158c76a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2C 5192 bytes
font_01_sfnt_off00008eac.bin
6ff7f9b2578ccd86c53ce1dfb18ca9ce37e03aefc865c584a90d65a2600abe6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAC 13304 bytes
font_02_sfnt_off0000b80a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB80A 4324 bytes

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