Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc514b023d61702…

MALICIOUS

PDF

49.7 KB Created: 2020-08-07 14:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 673db113d5a1459e0b86b56ff161bb3e SHA-1: eba50361973283c4ea3dd341509558b162a9044f SHA-256: 1bc514b023d61702cc1017ecd686c471e1ac716b48dd81ccef59888c21d71db6
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 pointing to Shopify domains, which is characteristic of a link farm designed to improve search engine rankings for malicious content. One critical heuristic identified a PDF redirector link to 'ttraff.cc', indicating an attempt to funnel users to malicious infrastructure. The document body, though partially corrupted, contains text related to 'automobile engineering textbook pdf file', suggesting a lure for users seeking educational materials.

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.cc/pify?keyword=automobile+engineering+textbook+pdf+file
    • http://files.doublefarley.com/uploads/1/3/2/6/132683121/ec3149b3ff9.pdf
    • http://titama.floridakeysoceangallery.com/uploads/1/3/2/6/132681352/44d1a1ed2.pdf
    • http://petuligo.olghammel.org/uploads/1/3/0/8/130874058/4360979.pdf
    • http://files.roysdrivingschool.co.uk/uploads/1/3/0/8/130813827/4730837.pdf
    • http://files.sacred-reiki-tarot.com/uploads/1/3/0/7/130740522/9799753.pdf
    • https://cdn.shopify.com/s/files/1/0435/5214/5560/files/plant_42_resident_evil.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/21400116684.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/25249102453.pdf
    • https://cdn.shopify.com/s/files/1/0432/7371/5880/files/1st_year_all_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/independence_day_anchoring_script_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/dasibejad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zemivok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdf
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/a_boy_called_slow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/javutibekib.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/20577114507.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/non_alcoholic_liver_disease.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/business_marketing_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/38002087135.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_off00006dde.bin
d58a5d46025a689d92038b13b0741c9192ae21b972558b7f44ad90d2bd1ea937
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDE 5236 bytes
font_01_sfnt_off00007f96.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F96 2116 bytes
font_02_sfnt_off00008960.bin
9521090342c8c87200d8d308b2e823b764e759b0db86036c3cbe9f957ad63cbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8960 15428 bytes