Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d89677731a5d779…

MALICIOUS

PDF

40.3 KB Created: 2020-08-10 15:34:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df0027b229612c4c43d86af3ec9ad591 SHA-1: e48ad1081436c919733485241fd31c2525de807b SHA-256: 2d89677731a5d7790609edc89b59895eb4cb34ee87aa151244db2c7bcd0ef05d
152 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to shopify domains, but one critical link directs to a known malicious redirector. The ML classifier strongly indicates maliciousness. The document body, though malformed, contains text related to 'additive manufacturing pdf' and the malicious URL, suggesting a lure to a scam or phishing page.

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.cc/pify?keyword=additive+manufacturing+pdf
    • http://vujuvasop.hannahjudson.com/uploads/1/3/0/7/130739204/xipuz-begesikavojiz-bowuzivo-wofilut.pdf
    • http://files.asavorytable.com/uploads/1/3/1/3/131397946/d4e6a80e68432c.pdf
    • http://kitunu.locushabitat.com/uploads/1/3/2/6/132682883/bofogiwo-vugudewos-vulari.pdf
    • http://files.picsaacademy.com/uploads/1/3/2/8/132814097/xusemij.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/99363732415.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0358/files/wakawodijiwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/14659443385.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/82824375801.pdf
    • https://cdn.shopify.com/s/files/1/0437/6520/3093/files/selection_does_not_contain_a_main_type.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/58823122261.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/85678957680.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/89182555212.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/ragifutugalogosixopakoxin.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/53642129755.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/player_s_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tavolotifejenirogamofiv.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_off00006073.bin
96ec2419defae98d41a7178d9040bc20e808a521252e60ffba1230bcbcfbc4e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6073 5312 bytes
font_01_sfnt_off00007271.bin
c86b472bc222a67daa535736482ca22b3db7a2591c6c5dd4a4a513767ec8a9ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x7271 9988 bytes