Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f5b4149d59f787…

MALICIOUS

PDF

44.3 KB Created: 2020-08-05 16:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d1739988f7c1774836387355fefacc5 SHA-1: 8d26ca6ad28c3dc772fd0fbc851f3954d4b5a877 SHA-256: 87f5b4149d59f787735d6931dee4084f0d51a25db90bb40e4d59b4a6b15445e7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary heuristic indicates a malicious redirector link to 'ttraff.com', which is likely used to obscure the final malicious destination. The document body itself contains garbled text but also includes the URL that triggered the malicious redirector heuristic, suggesting a lure to a page related to 'al anon twelve steps and twelve traditions pdf'. No scripts were extracted, but the extensive link farm and the malicious redirector strongly suggest a phishing or malware distribution attempt.

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.com/pify?keyword=al+anon+twelve+steps+and+twelve+traditions+pdf
    • http://derasa.riccifit.com/uploads/1/3/0/7/130776208/d986d22c78.pdf
    • http://suxob.goalfitnessactivewear.com/uploads/1/3/1/8/131872225/datizilusojudek_begudid_xinogu.pdf
    • http://files.pscandi.com/uploads/1/3/1/3/131380258/bifoposekokam.pdf
    • http://files.distinctiveautomotivesales.com/uploads/1/3/2/6/132681443/mifimobebexe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4839/4143/files/nokufojuri.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/bujujufofi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/lemedoriluna.pdf
    • https://cdn.shopify.com/s/files/1/0434/0344/4380/files/gukutetu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8927/8616/files/hulu_account_checker.pdf
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/evangelismo_elena_white.pdf
    • https://cdn.shopify.com/s/files/1/0440/6788/1125/files/baxenojotezo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/woxavikesurulaluvofozetu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/71158969441.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5719/files/wexumodagoneg.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/difference_between_c_and_java.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98048873934.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4700/files/54858040498.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000627e.bin
da5e6904de89b30ece4466a3c7050785473960d4e748ee3d2f207b7014bb7376
pdf-font-stream PDF embedded font (sfnt) at offset 0x627E 4964 bytes
font_01_sfnt_off0000737c.bin
9a897f72fbf85a6541c7733ca67f5d4100fd9ff599ed972f9c31618d6aadea2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x737C 10460 bytes
font_02_sfnt_off000095c9.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x95C9 4324 bytes