Malicious PDF — malware analysis report

Static analysis result for SHA-256 7575039d8d996dd1…

MALICIOUS

PDF

46.0 KB Created: 2020-03-20 03:56:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d26743e8364ef4837165d5a63239be27 SHA-1: 2f53bdded694eac77b96ab340a9c484e4b760df7 SHA-256: 7575039d8d996dd11162f7d6220cae8bcfd5a0dbd29a06ccad4c61a68222ea09
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to host malicious content. The document body includes a deceptive link for 'Deskjet f4100 series driver download', which redirects to a page containing further malicious PDF links. This indicates a phishing or scam attempt to trick users into downloading malware disguised as drivers.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 http://bahamasaugustllc.com/uploads/1/3/0/4/130488580/130488580.html#deskjet+f4100+series+driver+download
    • http://mortalissar.com/uploads/1/3/0/7/130775640/1639480.pdf
    • http://www.jefferyreeclinicalpsychologists.com/uploads/1/3/0/6/130620613/sexuminububuj.pdf
    • http://cstorecareers.com/uploads/1/3/0/5/130541424/rasigatidija.pdf
    • http://whiskygeekdom.com/uploads/1/3/0/4/130483583/df6ce10b624b.pdf
    • http://justinbdennis.com/uploads/1/3/0/7/130739522/tigenidegasonokukobu.pdf
    • http://tatesmotorsport.com/uploads/1/3/0/4/130489567/bavelima-zetusezozofuz.pdf
    • http://kitschorama.com/uploads/1/3/0/5/130543373/riremeneregal.pdf
    • http://bowdexterclothing.com/uploads/1/3/0/8/130874175/navilufikalifem.pdf
    • http://doisongmc.com/uploads/1/3/0/6/130605283/3423093.pdf
    • http://littleguybigtruckmoving.org/uploads/1/3/0/4/130478244/2059bfa379c19d5.pdf
    • http://thechillingsworthmystery.com/uploads/1/3/0/5/130550928/6f2df8d.pdf
    • http://drivinglessonsdorchester.net/uploads/1/3/0/5/130589058/voxipuzixawa_sitibefufu_peduge_jufezetesuni.pdf
    • http://mrscooterrentals.net/uploads/1/3/0/7/130740493/6ed397e57261a33.pdf
    • http://titangumshields.com/uploads/1/3/0/5/130550665/salamunutalez.pdf
    • http://pogopossum.net/uploads/1/3/0/6/130639199/3f44b43e907d7.pdf
    • http://reinlessriding.us/uploads/1/3/0/6/130639965/veruwovuvuri.pdf
    • http://www.dempseyyoung.com/uploads/1/3/0/5/130588451/87e666.pdf
    • http://luckyleafcannabis.com/uploads/1/3/0/7/130740175/dixonerifurifimo.pdf
    • http://www.globaloffensivenades.com/uploads/1/3/0/5/130551456/koxosexefapo_vebanufavomotel_besodavo_bagikovu.pdf
    • http://t4gg.com/uploads/1/3/0/5/130539933/3027285.pdf
    • http://warsfitness.com/uploads/1/3/0/6/130604176/lebanugit.pdf
    • http://holidayrentalsinflorida.co.uk/uploads/1/3/0/4/130488243/ditikag_bifanaworope_xifinuwoteloli.pdf
    • http://hotspringsrcclub.com/uploads/1/3/0/5/130543170/ruvefu.pdf
    • http://bloombodycare.com/uploads/1/3/0/3/130313212/30e18.pdf
    • http://atlantasadie.com/uploads/1/3/0/5/130589360/49e5c57d.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076f1.bin
7759335ba9f7f14e6241b97f1058a4d18e83c91e322e067d49f09a9eb438a15b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F1 7800 bytes
font_01_sfnt_off0000953c.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x953C 16036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.