Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45eec8ac544f743…

MALICIOUS

PDF

45.3 KB Created: 2020-07-31 20:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cda165f979f553479662fa7a8653aecb SHA-1: db3de1101a35a520ab30db1e964fda13ccdee9bc SHA-256: c45eec8ac544f743e3c6f58936908a8ff548445f2b77c11d807896f0b0ff300b
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Abu dhabi map pdf', suggesting a lure to entice users to click the malicious link. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially improve search engine ranking for malicious content.

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/wb?keyword=abu%20dhabi%20map%20pdf
    • http://files.goldandcharm.com/uploads/1/3/0/8/130873983/3853480.pdf
    • http://files.mabellephoto.net/uploads/1/3/1/4/131405948/4581677.pdf
    • http://files.parentchildclinic.com/uploads/1/3/0/8/130813314/xidefiri-sodano-dufiporagaf-wugokupumem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5850/files/48017798770.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/rifatila.pdf
    • https://cdn.shopify.com/s/files/1/0431/8173/6096/files/fonawuruluvifo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/tabinakavebari.pdf
    • https://cdn.shopify.com/s/files/1/0432/5061/4429/files/24379010356.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/68687581511.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/gukipus.pdf
    • https://cdn.shopify.com/s/files/1/0435/8746/9471/files/zimadoxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/moloku.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/japji_sahib_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/pudoziwatajuvaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/velikarufidepajevutodax.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_off000069d4.bin
b597051dde69f972b0bff3beacc1fec0844dedbdb4716b669702116b3e52f5ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x69D4 5104 bytes
font_01_sfnt_off00007b0b.bin
b1f686c5b69fe35b3d5c5348b0281611f1033fa69b6a218d0a8663fdcd783039
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0B 14636 bytes