Malicious PDF — malware analysis report

Static analysis result for SHA-256 7977e2eae4f9074e…

MALICIOUS

PDF

137.2 KB Created: 2020-08-08 00:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 407a7f83f9a3bee5b13c0424aca30e42 SHA-1: b8da2ba862c7f8c68848aeffcb573fa30c6565e8 SHA-256: 7977e2eae4f9074e09a95948b5b06e93918c5372babbac1ec0344de3c675944d
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'business associations' and includes the malicious URL. The heuristic firings indicate a PDF link farm and a malicious redirector, strongly suggesting the intent is to drive traffic to malicious infrastructure.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=acing+business+associations+pdf
    • http://sedakeviv.owyheeoffroadchallenge.com/uploads/1/3/1/6/131636725/kasidedomapuluto.pdf
    • http://files.holywellwalkersarewelcome.org/uploads/1/3/2/3/132302716/356834.pdf
    • http://files.chica-fashion.com/uploads/1/3/1/8/131857315/925f00fb.pdf
    • http://files.optimalacademyinc.com/uploads/1/3/2/7/132712315/5909d2f05edf47.pdf
    • http://files.lraveene.com/uploads/1/3/0/7/130775393/2d2c230bf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/english_lesson_plan_d._el._ed.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/mavupak.pdf
    • https://cdn.shopify.com/s/files/1/0440/3891/4213/files/vijid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9481/9484/files/zeriwatig.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/jilobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0719/files/pelafi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/pukodar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8188/files/key_and_peele_college_bowl.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/28086056355.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6584/files/pitaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/wikufegadadoxasijejozozel.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/panogovon.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/inverse_modulo_calculator.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_off0001daed.bin
c7c56d55c2bcca31a91666943d3ffc417ae8221cdf9b4d2eb9d9e7fa66443719
pdf-font-stream PDF embedded font (sfnt) at offset 0x1DAED 5324 bytes
font_01_sfnt_off0001ed24.bin
cd5e15b098ae06030498c34d1bdeb88ceebdc98ba3aa27b8a0f9460893bea58c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1ED24 12984 bytes