Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10f537ca851016e…

MALICIOUS

PDF

42.2 KB Created: 2020-08-09 10:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44f96417eb6c3c1133a112b8341c8594 SHA-1: 7f412de75c527a3a416bd406d979030ceee5454b SHA-256: f10f537ca851016ecf2454efe9d75ed7a1a4144080775ceb936b4cb14123d905
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=pengertian+apgar+score+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs, suggesting an attempt to drive traffic to malicious infrastructure under the guise of providing PDF 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=pengertian+apgar+score+pdf
    • http://files.sharpeningdoneright.com/uploads/1/3/1/3/131380292/vegula.pdf
    • http://numefofe.oneworldcircus.com/uploads/1/3/1/0/131070178/retetesa-xilumin-sotabopalapudo-fawamipefukikov.pdf
    • http://files.giannaenglert.com/uploads/1/3/1/4/131437806/zatisomu.pdf
    • http://files.moneimadwan.com/uploads/1/3/1/4/131438423/9704231.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/remikojerepolixadov.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/tonaribik.pdf
    • https://cdn.shopify.com/s/files/1/0436/0214/9540/files/rent_increase_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/mikoxadexedefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/tezapusuruforu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/96275248673.pdf
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/digital_signal_processing_mitra_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/goluvugivojifugotumorope.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/veligepuxefedugikaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/duwumubevuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5881/files/speaking_mathematically_variables.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/over_and_over_nelly.pdf
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/past_participle_irregular_verbs_list.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/
    • https://cdn.shopify.com/s/files/1/0438/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000672c.bin
0f874999bc715da98aef7dbefb37d789afd347c0a821b6357e5c7ad455590e00
pdf-font-stream PDF embedded font (sfnt) at offset 0x672C 5292 bytes
font_01_sfnt_off0000793d.bin
69aa1d92f4045a2d610ca89b2ddd1b021f35f01a0f599bcca89bf67161e521c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x793D 10104 bytes