Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08d5e59e6ccd86a…

MALICIOUS

PDF

43.9 KB Created: 2020-08-09 11:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd093437b44bdf9c02f6eb9f12253fd6 SHA-1: 27f76e2d4cce8196e939230eb38a8d60172fda66 SHA-256: f08d5e59e6ccd86abaecff4d48de4e50f506bdae1df7e35e8c7b0ddef1d73155
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that point to a known malicious redirector, ttraff.cc, disguised with a keyword related to Islamic books. The document body, though heavily obfuscated, contains the same lure text and URLs. The presence of numerous SEO-optimized PDF links further suggests a link farm or spamming operation. The ML classifier strongly indicated maliciousness.

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=shia+islamic+books+urdu+pdf
    • http://files.strengthforthejourneyretreats.com/uploads/1/3/0/7/130738631/lofixiralapumo-futojusim.pdf
    • http://files.dsmithscience.com/uploads/1/3/1/6/131607075/cdcdc7.pdf
    • http://patemej.seth-dobbs.com/uploads/1/3/1/3/131380213/zitabopomi.pdf
    • http://files.itayshmueli.com/uploads/1/3/1/6/131606201/jowurokagugowu_peluz_nagolabok_jajadogigo.pdf
    • http://files.mikevincentphotography.net/uploads/1/3/1/3/131383541/baruxubu_kevogun_zujamozesaxapi_vigevoluzoju.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/faxapidigogurar.pdf
    • https://cdn.shopify.com/s/files/1/0436/4288/0160/files/ledosanevozote.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/fegiwexud.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/jifegomu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/fotopaxojerumemiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/zuladekujuralopo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/guvamifuje.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/es_capate_luis_coronel.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/2008_vw_gti_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/1973817081.pdf
    • https://cdn.shopify.com/s/files/1/0450/1300/8534/files/impulse_control_activities.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062bb.bin
5375ccb9ec324545dfc2d700d92cd01f94cb3dc1e55af63f09e808ae250dbd30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BB 5704 bytes
font_01_sfnt_off000075f2.bin
5d0233c501c06abf38df67e17e891485bc4cca25590ff75a342f660c1fae538e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F2 14656 bytes

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