Malicious PDF — malware analysis report

Static analysis result for SHA-256 807cee1da54426de…

MALICIOUS

PDF

44.8 KB Created: 2020-08-22 02:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5f58787029e283e422de7683417602a SHA-1: 887c0850b7237ffb98f64fd14179d0c479d1fbbb SHA-256: 807cee1da54426ded6e61607b2344695caa7fd9a13765a2f1cddd5f871220796
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for phishing and scam campaigns. The document body, though obfuscated, contains text related to a 'Chevy camaro 2010 owners manual' and a URL, suggesting a lure to trick users into clicking malicious links. The presence of numerous Shopify-hosted PDF links further indicates a link farm designed to manipulate search engine results for malicious purposes.

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=chevy+camaro+2010+owners+manual
    • http://daxaduvos.2400f.com/uploads/1/3/0/8/130814328/defoveral-tedoma.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0463/1825/6288/files/avatharam_smart_hd_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/new_shyam_bhajan_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0432/9861/9550/files/luwob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9646434013.pdf
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/27356010838.pdf
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/les_9_cadrans_de_l_abdomen_et_leur_contenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3738/5123/files/american_english_file_level_5.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/50102894657.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/cent_to_dollar.pdf
    • https://cdn.shopify.com/s/files/1/0436/8351/2473/files/dujus.pdf
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/14164540977.pdf
    • https://cdn.shopify.com/s/files/1/0431/4005/5208/files/nalenovixevowisud.pdf
    • https://cdn.shopify.com/s/files/1/0435/3543/3882/files/xafulizizetamoralotaza.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_off00006306.bin
b9250a01d42f3fd2ba6d2aa508c0f6698c46c3155f396a99b3ae592f7d289258		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6306 5396 bytes
font_01_sfnt_off0000754c.bin
2ff7f0432c9e2ccf82a034d8b353556f0bb2f5d9092a56636e61baa8b5ba68df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754C 10212 bytes
font_02_sfnt_off00009849.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9849 4324 bytes

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