Malicious PDF — malware analysis report

Static analysis result for SHA-256 13044dbebd6c96b5…

MALICIOUS

PDF

33.2 KB Created: 2020-08-01 13:23:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d306f1c8fab8f86c8daa3054e74649a SHA-1: 31356b15b2ef869a881439448981ddea1ea4f493 SHA-256: 13044dbebd6c96b5b417c4a92919f52f461b55642ec4442417a3e19528112b53
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure further supports a malicious intent. The document body, though partially obfuscated, contains the malicious URL, indicating an attempt to direct users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=da+2062+pdf
    • http://files.shopmsbconway.com/uploads/1/3/0/7/130738836/3476064.pdf
    • http://files.unponteperannefrank.org/uploads/1/3/1/6/131606965/lawudiwaxexikabiwi.pdf
    • http://files.divinemercy724.com/uploads/1/3/1/4/131454733/zafigoduz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/miresewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67279733654.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/kukota.pdf
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/17790069079.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/tesewodud.pdf
    • https://cdn.shopify.com/s/files/1/0437/6572/7384/files/84503047601.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/89843291962.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/27791159148.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/bujeninasulejofanebixoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/24101516663.pdf
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/gezazomadajiga.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_off000044ed.bin
999f2a3c5184c1692221bd514b8b9f97d43713d3a2b8006dfaaa0673b5daa731		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44ED 5156 bytes
font_01_sfnt_off00005699.bin
d31237c7ae9ac7e696e9e368a38307cedf4f55a23861dbb15cb7f6f61fbb7f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5699 9888 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.