Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f3a11b06f9401d7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-01 16:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c9197cae33b836a86d672b0a146f03e SHA-1: 58aee91efcf3e176de90e309ff3910c0560b8a53 SHA-256: 3f3a11b06f9401d7621905f8c0abd7f1861c97ae4f253f4dd23081ab42347c18
160 Risk Score

Malware Insights

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

The PDF contains embedded links and is identified as a lure for an advance-fee scam, specifically mentioning USCIS form I-407. The primary malicious link, 'https://ttraff.cc/pify?keyword=form+i+407+uscis', is flagged as a redirector to malicious infrastructure. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or distribution.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=form+i+407+uscis
    • http://files.mgsathletics.com/uploads/1/3/0/7/130776855/wukepexaz_nikonawovafa_foxozog.pdf
    • http://files.calsafemovers.com/uploads/1/3/0/9/130969148/8537334.pdf
    • http://files.razorpedia.com/uploads/1/3/0/8/130874329/butebefovanaka_gusanuvemiku.pdf
    • http://files.mycorporatecounselor.com/uploads/1/3/1/4/131437983/1606706.pdf
    • http://files.grandaveplaza.com/uploads/1/3/1/3/131383727/8216253.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/32986020926.pdf
    • https://cdn.shopify.com/s/files/1/0434/7897/4616/files/takuwibuxumizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/jezasilakubogurijuvum.pdf
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/48050564511.pdf
    • https://cdn.shopify.com/s/files/1/0435/5493/0839/files/97857603664.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/nurorasuxepazaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/timoxoliwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0887/6956/files/69788815417.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/17048683715.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/how_to_redeem_a_steam_code.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_off0000706f.bin
53b9eeb99411fc863e2133e40253d8d53ad7d7df0830dfb4b0bc3c1ceb112cce
pdf-font-stream PDF embedded font (sfnt) at offset 0x706F 4968 bytes
font_01_sfnt_off00008155.bin
19d0deca98ee2d1a6fcb3b5c170f75d8c2165c564f61e8177d93d8b81d517856
pdf-font-stream PDF embedded font (sfnt) at offset 0x8155 10608 bytes