Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca393500007d23d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-20 05:39:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed7d7e32756f0c47a93cd67f3369ad77 SHA-1: 0d6b4dc1badfd865e0ef84edf196da4e3fa97f50 SHA-256: 7ca393500007d23d4e04075e3a4edc203c68cefcbc21d62e7448959a9fec77a5
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains text related to 'information report template grade 3' and the malicious URL, suggesting a lure. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm techniques used to obscure malicious activity.

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=information+report+template+grade+3
    • http://files.masterkingroofing.com/uploads/1/3/1/3/131398117/ferafabunotimi.pdf
    • http://files.marriedmarks.com/uploads/1/3/2/8/132816158/wawezanuz-titun-resuta-ponupax.pdf
    • http://files.theygavetheirtoday.com/uploads/1/3/0/7/130740180/b33f6ff26c3c.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/gigilarujideg.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/83809370400.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/letib.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/47236433206.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/jaxikaluxidomev.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4028/files/96348710763.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/sazejazozomasosagodar.pdf
    • https://cdn.shopify.com/s/files/1/0437/1759/1189/files/kelibowipupetepoxud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/dark_disciple.pdf
    • https://cdn.shopify.com/s/files/1/0447/0312/1562/files/robifewafugo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/zawitogugiginuto.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojezurin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16994954809.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_off00006d2b.bin
fdf44d93f5670eb50dcf4a5197bf1d260f19ec99ba133ce57800ce65b29ef25c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2B 5284 bytes
font_01_sfnt_off00007f06.bin
58e535e8c4ec9873b7ec77da4fa86bfee34c9cdc733a1b5fb567c3ab1e4ec3e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F06 9932 bytes