Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2dc08de0b28d30d…

MALICIOUS

PDF

41.9 KB Created: 2020-08-10 12:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71f4eacf4d440265fb7c1bb7e2c9f712 SHA-1: f4ad668b5b7f142363cb02e3dffc9597e6f6f560 SHA-256: d2dc08de0b28d30dd15d36abb169e80c21c4928abc76fb86e96925107be81d28
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links directs to a known malicious redirector. While the document body contains text related to reproduction in plants and animals, this appears to be a lure to disguise the malicious nature of the embedded links. The file is likely used to distribute further malicious content or manipulate search engine 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.ru/pify?keyword=sexual+and+asexual+reproduction+in+plants+and+animals+pdf
    • http://files.madisonstinemetz.com/uploads/1/3/0/9/130969790/952d6ea5e5a982.pdf
    • http://files.windyoakes.com/uploads/1/3/0/7/130738881/loralitunumozikodak.pdf
    • http://files.storyshack.org/uploads/1/3/1/3/131384113/xidubixojizajipap.pdf
    • http://jisagova.yourbesthealthbyfriday.com/uploads/1/3/0/7/130775971/fuxurofi_pizaxazen_zalisekesi_zusukar.pdf
    • http://files.hiflos.com/uploads/1/3/1/6/131637679/kejexav.pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/verb_be_present_simple.pdf
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/sitapurogoroni.pdf
    • https://cdn.shopify.com/s/files/1/0429/2132/8807/files/japexererodujavuwitovum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/zufuteguwarafov.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/38348607040.pdf
    • https://cdn.shopify.com/s/files/1/0437/1755/8426/files/articulos_cientificos_de_biologia.pdf
    • https://cdn.shopify.com/s/files/1/0450/5419/7910/files/stay_hungry_stay_foolish_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7242/9980/files/69268075261.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/xebifo.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_off0000644f.bin
8e474a239efd7b63453ecf6c9d0a487e4bc80eb0a3adba48e04e2c4975a730a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x644F 5472 bytes
font_01_sfnt_off000076da.bin
5bd10593610edbcef0eb468a561375cdbbfaddbc0ea790cc3d14714dc1bcbbc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x76DA 10552 bytes