Malicious PDF — malware analysis report

Static analysis result for SHA-256 a916db040a7d873c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 23:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e9b9a07f6c589a3b737b5c09ce74a2e SHA-1: aed9afed230f10d8ec2025b478eb9402db2a4740 SHA-256: a916db040a7d873c45d73bba9596679b589b5a708195a987ac17ee60779e5672
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the text 'how to be a good speaker pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself is used to host and redirect to malicious content.

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=how+to+be+a+good+speaker+pdf
    • http://files.fruitageofthefield.com/uploads/1/3/1/0/131071145/borolafed_vumusoxav_kigodusixulome.pdf
    • http://files.tennantcreektransport.org/uploads/1/3/1/6/131606289/4232477.pdf
    • http://files.mseastsclass.com/uploads/1/3/0/8/130814831/setubaruk.pdf
    • http://files.photographybyjamiec.com/uploads/1/3/2/8/132815206/zifilavanelo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/pejabozexazamemusefajojej.pdf
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/ratemajosisog.pdf
    • https://cdn.shopify.com/s/files/1/0430/8742/9785/files/zitowu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/boporifilubikagej.pdf
    • https://cdn.shopify.com/s/files/1/0432/1217/7563/files/estilos_de_aprendizaje_visual_auditivo_kinestesico.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/dobefinomirikugike.pdf
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/97891124247.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/3978118488.pdf
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/telugu_songs_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/jaguxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/59579162026.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/35980765455.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6901/files/dowifimemofuvusugedem.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_off00006b41.bin
fa4277f1a5919febb45ce69a6c8247dd357fcaf748834d07778ef2dced19885f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B41 5436 bytes
font_01_sfnt_off00007ddb.bin
11db27e70bba65e92e701cb9f48489c1d0b25b8ab677514af23a0897d0aa02c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDB 10316 bytes