Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed438194e81476b…

MALICIOUS

PDF

41.3 KB Created: 2020-09-05 08:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4922c82e1f5082587ac3da81d2af8de2 SHA-1: 2153c8747aca9df17903edb442bf9276f2a50c5a SHA-256: 0ed438194e81476bc78176b08a1a35ec527b970cf4fbf71fbfd2708b6cd03580
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Aldi nord foto bestellsoftware'. The presence of numerous external PDF links, many pointing to benign content, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted, but the PDF structure and malicious link indicate a phishing or scam attempt.

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.club/wix?keyword=aldi+nord+foto+bestellsoftware
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/5dc3ca_9212543c05b449919d0c070408e7bf4a.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_6a56603f8e0146238b7f49a1ef3cf930.pdf
    • https://static.usrfiles.com/ugd/2486b5_7d1fbb337ba14c6da819e79e0ae7ed10.pdf
    • https://static.usrfiles.com/ugd/c162b3_7365988935184b2ea10cd31299ff7c2b.pdf
    • https://static.usrfiles.com/ugd/08fe48_f043701934874981a7e78ed993a6fedb.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/wajah_bandung_tempo_doeloe.pdf
    • https://cdn.shopify.com/s/files/1/0460/3615/6575/files/papa_s_sushiria_apk_ios.pdf
    • https://cdn.shopify.com/s/files/1/0447/4011/6629/files/datinanaforipufomezuru.pdf
    • https://cdn.shopify.com/s/files/1/0435/9664/4511/files/buludonagamokamut.pdf
    • https://cdn.shopify.com/s/files/1/0437/1415/0553/files/billie_s_bounce_tab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/40412807483.pdf
    • https://cdn.shopify.com/s/files/1/0429/4030/1478/files/punuzozuzivopiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1630/files/phylum_protozoa_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobuwavidojanunixi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/lisilu.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_off00006176.bin
8748a536b5898b0ccc3cd4426be3f0fbeb8e6ba8580e428814162784d501b73c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 5124 bytes
font_01_sfnt_off00007300.bin
43bbc20389a09af05b9bdd3879949adb1b6ca28883e52bcb38ad92e796e4bf43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7300 10988 bytes

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