Malicious PDF — malware analysis report

Static analysis result for SHA-256 078abd1f66356601…

MALICIOUS

PDF

43.5 KB Created: 2020-08-15 05:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5124a87f0341f515f4bffc39fc31eec2 SHA-1: d742adfe0add86867300c81d351efb1c3ce065ae SHA-256: 078abd1f6635660162bdda0333d0cddf72339d55be6401065f314e40542bd28f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though partially obfuscated, includes the same URL, suggesting an attempt to lure users to malicious content under the guise of search results. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates 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.com/pify?keyword=extent+report+in+selenium+webdriver+c%2523
    • http://files.allysonparsonsart.com/uploads/1/3/1/4/131454090/bc8dc6d431e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/allis_chalmers_5015.pdf
    • https://cdn.shopify.com/s/files/1/0437/1392/1175/files/weider_ruthless_workout_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/capitalismo_vs_socialismo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/96703198509.pdf
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/63282059622.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/zejimevosetam.pdf
    • https://cdn.shopify.com/s/files/1/0432/6572/0486/files/dabilutusidusuxetilidaviz.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8675/files/gowaguzanarixog.pdf
    • https://cdn.shopify.com/s/files/1/0437/1513/3605/files/54773617161.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/86634028005.pdf
    • https://cdn.shopify.com/s/files/1/0437/0894/0441/files/alcoholismo_como_problema_social.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/jerizefiwedefepenegiwobuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/waserapavejunajawinix.pdf
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/89891750642.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_off000060d2.bin
a05e3737a4abecfc54bc73df51bcf020036674f83ce2280bb0c815d9fdc08d24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 5324 bytes
font_01_sfnt_off000072e7.bin
5d3c202fb8228e4c9c6b91dc4ac97e587322579650278103a3a31240e7074eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E7 14652 bytes

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