Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b1201d54f65ae4f…

MALICIOUS

PDF

45.3 KB Created: 2020-09-02 23:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 220a7a515564343114f18c69192633a0 SHA-1: 25dcab99eb719b53e75f1469195b40dc3f86c3c3 SHA-256: 1b1201d54f65ae4fe816a52f1b35d3d3dde93f418d9f27c644a56012ca095b37
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.me'. The document body, though partially corrupted, contains the same URL and mentions 'Crystal report for visual studio 2015 enterprise', suggesting a lure. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning and driving traffic to malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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.me/pify?keyword=crystal+report+for+visual+studio+2015+enterprise
    • https://static.usrfiles.com/ugd/cac9e4_33e245804fda4eb4bc6853bbe8d96d55.pdf
    • https://static.usrfiles.com/ugd/b8c837_74e0458252074051bff3d1f92af7861c.pdf
    • https://static.usrfiles.com/ugd/b8c837_b128c3a141f74a0eb75a7d75772ce05b.pdf
    • https://static.usrfiles.com/ugd/b48b60_17b2a0d8183545f9b4333197f5f74a12.pdf
    • https://static.usrfiles.com/ugd/16a96a_de933761a7744d538cba77e3dcbeaf06.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32808714247.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/nilereluwaloxatix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5654/files/bukowegapuvoxawameso.pdf
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/kiwususujujabumos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/ruxukenenigobezen.pdf
    • https://cdn.shopify.com/s/files/1/0436/2544/7587/files/kawasaki_220_bayou.pdf
    • https://cdn.shopify.com/s/files/1/0438/0606/4801/files/pennsylvania_transformer_canonsburg_pa.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/mufewojofuduzusizivamo.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca6aca370f124b1b9c1597a557f422a9.pdf
    • https://static.usrfiles.com/ugd/f59309_a1d17aff9c7b47df98722de73ce10468.pdf
    • https://static.usrfiles.com/ugd/d5415a_44b938a910554b68bc9f353c30be29ba.pdf
    • https://static.usrfiles.com/ugd/906e9f_df75a3ebbecf4bf9ac2cc54a363694eb.pdf
    • https://static.usrfiles.com/ugd/7f16bd_65a45b41673a448aa0a2e7a7bd5f933e.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_off000066cd.bin
90c915d9ab61e8c5e5fb50eaf3072c4ae77b0ef58df00d33118ee8e55ec4ed97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 5552 bytes
font_01_sfnt_off000079d4.bin
8194baa9635447fdeb2c6622befcf31051b5e956ea2919c80da5557ffc972f30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D4 14888 bytes

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