Malicious PDF — malware analysis report

Static analysis result for SHA-256 a01a8683ce392d9b…

MALICIOUS

PDF

44.0 KB Created: 2020-08-09 20:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ac7a362c16a342b79bea455064e8201 SHA-1: 6a22f139b4cd52c9c9fcfe8c9a48fe6b09bd86f6 SHA-256: a01a8683ce392d9b70404b35e9faca2cde5eabe09167669a915a1d2576f13eaa
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=apspdcl+results+2020+pdf'. Additionally, it exhibits a PDF link farm behavior, embedding numerous links to other PDF files, with 'https://cdn.shopify.com/s/files/1/0428/7689/5398/files/kedifamimikogit.pdf' being the first identified. The document body, though heavily obfuscated, contains text related to 'Apspdcl results 2020 pdf', suggesting a lure to trick users into believing it's legitimate search results.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=apspdcl+results+2020+pdf
    • http://files.victoriacookson.com/uploads/1/3/1/4/131406558/9568757.pdf
    • http://files.elecflex.greatwebsitebuilder.com/uploads/1/3/1/6/131606408/sivebemubo.pdf
    • http://files.dadeartanddesignlab.com/uploads/1/3/1/4/131407057/nofozobawugug-kileduxinoxike.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/kedifamimikogit.pdf
    • https://cdn.shopify.com/s/files/1/0429/6212/4959/files/descriptive_inorganic_chemistry_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/gugif.pdf
    • https://cdn.shopify.com/s/files/1/0435/9153/2699/files/33181675953.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/git_change_origin_branch.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/kexidajirepir.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/gaverareluxab.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/xebarizuwuxerukuparog.pdf
    • https://cdn.shopify.com/s/files/1/0430/1117/8649/files/biochemistry_proteins_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/2896/2715/files/65148080740.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/3916508601.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/abroad_times_paper.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/kusetafudalinu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/33033616219.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_off00006e1a.bin
a71c0b1db3bb046bde946447eefcb9434694cf60ed91bc6f023510232206011d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1A 5200 bytes
font_01_sfnt_off00007fe4.bin
004a473e7887ab57b85e8ae2b16d1401c35e8efa1156e1721d6e918c704c591a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE4 10208 bytes