Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da36d4eab10271e…

MALICIOUS

PDF

44.6 KB Created: 2020-08-07 13:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2896299cb51892b222b11cf4d535015 SHA-1: 059f831e38ca12d40469018d658b9c56ea23a99b SHA-256: 3da36d4eab10271eb5dc6c47771156ae537ea169e59fe1958c04671116b5fe0c
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=canvas+painting+tutorial+pdf', indicating a lure to a malicious site disguised as a tutorial. The presence of a large number of external links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=canvas+painting+tutorial+pdf
    • http://files.paigeandbrittboutique.com/uploads/1/3/0/7/130775558/puxoxemunirajub.pdf
    • http://files.asantesboutique.com/uploads/1/3/0/7/130775129/lepagulotibapimud.pdf
    • http://files.atomicconcepts.net/uploads/1/3/1/4/131407572/2976382.pdf
    • http://jufot.wicknsudsbydino.com/uploads/1/3/0/7/130776485/tonovonapovit-voludugezosida-wozoxur-xidujoluresine.pdf
    • http://files.rachelritacco.com/uploads/1/3/0/7/130739376/basowesituxar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/94969619075.pdf
    • https://cdn.shopify.com/s/files/1/0433/1244/7652/files/wemitoxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/crop_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/kigovapivizon.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/il_cardellino_libro.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/24337551914.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/likilovodesojobel.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/79450729466.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/mal_song_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/forming_storming_norming_performing.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/mastering_autodesk_inventor_2016.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/9065564112.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/cold_war_definition.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_off00006fb7.bin
3fd64a6625480caa5fb2de5857627958d06dd3c9432c11424fadbac17d98a62b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB7 5176 bytes
font_01_sfnt_off00008167.bin
9ee6dc82c00bd76874cb4baf5083c1d1c6995ad519ce83d3da51e589d93152e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8167 10504 bytes